Good (0-50) AQI Cities

932 US cities have a 5-year average AQI in the good range. Air quality is satisfactory, posing little or no health risk.

932

Cities

91.4%

Of All Cities

317

Improving

217

Worsening

Good Moderate Unhealthy

All Good AQI Cities

City	State	5yr Avg AQI	Grade	Trend	Worst Pollutant
Alexandria City, Virginia	VA	6	A	Improving	PM10
North Slope, Alaska	AK	6	A	Improving	PM2.5
Hopewell City, Virginia	VA	7	A	Improving	PM10
Winchester City, Virginia	VA	7	A	Improving	PM10
Custer, Idaho	ID	8	A	Stable	PM2.5
Carroll, Virginia	VA	8	A	Stable	PM10
Juncos, Puerto Rico	PR	9	A	Improving	Ozone
San Juan, Colorado	CO	9	B	Stable	PM2.5
Caguas, Puerto Rico	PR	10	A	Improving	NO2
Kenai Peninsula, Alaska	AK	10	B	Stable	PM2.5
Lake, Montana	MT	10	B	Stable	PM2.5
San Juan, Puerto Rico	PR	10	A	Improving	CO
Harrison, Ohio	OH	10	B	Worsening	CO
Powell, Montana	MT	11	B	Stable	PM2.5
Wayne, Utah	UT	11	B	Stable	PM2.5
Windham, Vermont	VT	12	A	Improving	PM2.5
Aleutians East, Alaska	AK	12	B	Stable	PM2.5
Columbiana, Ohio	OH	12	A	Improving	PM10
Cook, Minnesota	MN	12	A	Improving	PM2.5
Fremont, Colorado	CO	13	A	Stable	PM10
Apache, Arizona	AZ	13	A	Stable	PM10
Catron, New Mexico	NM	13	B	Stable	PM2.5
Pitkin, Colorado	CO	13	B	Stable	PM10
Hughes, South Dakota	SD	13	A	Improving	PM2.5
Keweenaw, Michigan	MI	13	B	Stable	PM2.5
Los Alamos, New Mexico	NM	13	B	Stable	PM2.5
Roosevelt, Montana	MT	14	B	Stable	PM2.5
Routt, Colorado	CO	14	A	Stable	PM10
Custer, Oklahoma	OK	14	A	Stable	PM10
Georgetown, South Carolina	SC	14	A	Improving	PM10
Alamosa, Colorado	CO	14	A	Improving	PM10
Lincoln, New Mexico	NM	14	B	Stable	PM2.5
Socorro, New Mexico	NM	15	B	Stable	PM2.5
Kauai, Hawaii	HI	15	A	Improving	PM2.5
Ford, Kansas	KS	15	B	Worsening	PM10
Carbon, Wyoming	WY	16	A	Improving	Ozone
Sherman, Kansas	KS	16	B	Stable	PM10
Platte, Wyoming	WY	16	B	Stable	PM10
Putnam, Florida	FL	16	B	Worsening	PM10
Sheridan, Montana	MT	16	B	Stable	PM2.5
Cass, Nebraska	NE	16	A	Improving	PM10
Jerome, Idaho	ID	17	B	Improving	PM2.5
Thomas, Nebraska	NE	17	B	Stable	PM2.5
Luna, New Mexico	NM	17	A	Improving	PM10
Matanuska-Susitna, Alaska	AK	17	A	Improving	PM2.5
Mohave, Arizona	AZ	17	B	Stable	PM10
Prowers, Colorado	CO	17	B	Stable	PM10
Bayamon, Puerto Rico	PR	18	A	Improving	CO
Belmont, Ohio	OH	18	B	Worsening	NO2
Cerro Gordo, Iowa	IA	18	B	Worsening	PM10
Latah, Idaho	ID	18	B	Worsening	PM2.5
Muskogee, Oklahoma	OK	18	A	Improving	PM10
Adams, Washington	WA	18	B	Improving	PM2.5
Norfolk City, Virginia	VA	18	A	Improving	NO2
Adjuntas, Puerto Rico	PR	19	A	Improving	PM2.5
Brooke, West Virginia	WV	19	B	Stable	PM10
Garfield, Washington	WA	20	A	Improving	PM2.5
Nye, Nevada	NV	20	B	Worsening	PM10
Park, Wyoming	WY	20	B	Stable	PM2.5
Maui, Hawaii	HI	21	A	Improving	PM2.5
Monroe, Michigan	MI	21	A	Improving	PM10
Blaine, Idaho	ID	21	C	Worsening	PM2.5
Uinta, Wyoming	WY	21	A	Improving	Ozone
Scioto, Ohio	OH	21	C	Worsening	PM10
St John, Virgin Islands	VI	21	A	Improving	PM2.5
Jackson, Colorado	CO	21	B	Worsening	PM2.5
Klickitat, Washington	WA	22	B	Stable	PM2.5
Cowlitz, Washington	WA	22	B	Improving	PM2.5
Franklin, Washington	WA	22	B	Stable	PM2.5
Benton, Oregon	OR	22	B	Stable	PM2.5
Douglas, Nevada	NV	22	A	Improving	PM2.5
Jefferson, Washington	WA	22	B	Improving	PM2.5
Juneau, Alaska	AK	22	A	Improving	PM2.5
Ravalli, Montana	MT	22	B	Improving	PM2.5
Hyde, North Carolina	NC	23	B	Improving	PM2.5
Taos, New Mexico	NM	23	B	Worsening	PM2.5
Whitman, Washington	WA	23	B	Stable	PM2.5
Rosebud, Montana	MT	23	A	Improving	Ozone
Winona, Minnesota	MN	23	B	Improving	PM2.5
Chaves, New Mexico	NM	24	B	Stable	PM2.5
Guayama, Puerto Rico	PR	24	B	Improving	PM2.5
Scotts Bluff, Nebraska	NE	24	B	Improving	PM2.5
Mason, Washington	WA	24	B	Improving	PM2.5
Wasco, Oregon	OR	24	B	Improving	PM2.5
Kitsap, Washington	WA	25	B	Worsening	PM2.5
Franklin, Idaho	ID	25	B	Improving	PM2.5
Deschutes, Oregon	OR	25	B	Improving	PM2.5
Grays Harbor, Washington	WA	25	B	Improving	PM2.5
Lewis, Washington	WA	25	B	Improving	PM2.5
Walla Walla, Washington	WA	25	B	Worsening	PM2.5
Hawaii, Hawaii	HI	25	A	Improving	PM2.5
Oneida, New York	NY	25	B	Improving	PM2.5
Taney, Missouri	MO	26	A	Improving	PM2.5
Charlton, Georgia	GA	26	B	Improving	PM2.5
Colleton, South Carolina	SC	26	A	Improving	PM2.5
Brown, South Dakota	SD	26	B	Improving	PM2.5
Anchorage, Alaska	AK	26	A	Improving	PM2.5
Chase, Kansas	KS	26	B	Stable	PM2.5
Grant, Washington	WA	26	B	Stable	PM2.5
Twin Falls, Idaho	ID	27	B	Improving	PM2.5
Union, Oregon	OR	27	B	Improving	PM2.5
Wallowa, Oregon	OR	27	B	Stable	PM2.5
Beltrami, Minnesota	MN	27	B	Worsening	PM2.5
Lake, Oregon	OR	27	B	Stable	PM2.5
Pueblo, Colorado	CO	27	B	Worsening	PM2.5
Thurston, Washington	WA	27	B	Improving	PM2.5
St Croix, Virgin Islands	VI	27	A	Improving	PM2.5
Silver Bow, Montana	MT	27	B	Improving	PM2.5
Grant, Oklahoma	OK	28	C	Worsening	PM2.5
Potter, Texas	TX	28	B	Stable	PM2.5
Fajardo, Puerto Rico	PR	28	B	Worsening	PM2.5
Kittitas, Washington	WA	28	B	Worsening	PM2.5
Skagit, Washington	WA	28	B	Improving	PM2.5
Humboldt, California	CA	28	A	Improving	Ozone
Jefferson, Oregon	OR	28	A	Improving	PM2.5
Lubbock, Texas	TX	28	B	Improving	PM2.5
Crook, Oregon	OR	29	B	Improving	PM2.5
Columbia, Oregon	OR	29	B	Stable	PM2.5
Honolulu, Hawaii	HI	29	B	Improving	Ozone
Lincoln, Wyoming	WY	29	C	Worsening	PM10
Ponce, Puerto Rico	PR	29	B	Stable	PM10
Whatcom, Washington	WA	29	B	Improving	PM2.5
Guaynabo, Puerto Rico	PR	29	C	Worsening	NO2
Herkimer, New York	NY	29	B	Improving	Ozone
Carlton, Minnesota	MN	29	B	Stable	Ozone
Hall, Nebraska	NE	29	B	Stable	PM2.5
Lawrence, Alabama	AL	29	B	Improving	PM2.5
Nassau, New York	NY	30	B	Improving	PM2.5
Bonneville, Idaho	ID	30	B	Improving	PM2.5
Kootenai, Idaho	ID	30	B	Improving	PM2.5
Athens, Ohio	OH	30	B	Improving	PM2.5
Mitchell, North Carolina	NC	30	B	Improving	PM2.5
St. James, Louisiana	LA	30	B	Stable	Ozone
Cascade, Montana	MT	30	B	Improving	PM2.5
Washington, Nebraska	NE	31	B	Improving	PM2.5
Baker, Oregon	OR	31	B	Stable	PM2.5
Elko, Nevada	NV	31	C	Worsening	PM10
Franklin, New York	NY	31	C	Worsening	Ozone
Huntington, Indiana	IN	31	B	Improving	Ozone
Stoddard, Missouri	MO	31	B	Improving	PM2.5
Victoria, Texas	TX	31	B	Stable	Ozone
Mayagnez, Puerto Rico	PR	31	C	Worsening	PM2.5
Lynchburg City, Virginia	VA	31	B	Improving	PM2.5
Macon, North Carolina	NC	31	B	Stable	Ozone
Bay, Michigan	MI	32	B	Improving	PM2.5
Cass, Minnesota	MN	32	C	Worsening	PM2.5
Chelan, Washington	WA	32	C	Stable	PM2.5
Susquehanna, Pennsylvania	PA	32	B	Improving	PM2.5
Columbia, Washington	WA	32	C	Worsening	PM2.5
Del Norte, California	CA	32	C	Worsening	PM2.5
Lake, California	CA	32	B	Improving	Ozone
Saratoga, New York	NY	32	B	Stable	Ozone
Ascension, Louisiana	LA	32	B	Stable	Ozone
Gallatin, Montana	MT	32	B	Stable	PM2.5
Liberty, Florida	FL	32	B	Stable	Ozone
Polk, Texas	TX	32	B	Stable	Ozone
Gilmer, West Virginia	WV	32	B	Worsening	Ozone
Belknap, New Hampshire	NH	32	B	Stable	Ozone
Clackamas, Oregon	OR	32	B	Stable	PM2.5
Trinity, California	CA	32	C	Worsening	PM2.5
Clark, Arkansas	AR	33	B	Stable	Ozone
Lake, Minnesota	MN	33	C	Worsening	PM2.5
Lawrence, Tennessee	TN	33	B	Improving	PM2.5
Mono, California	CA	33	D	Worsening	PM2.5
St. John the Baptist, Louisiana	LA	33	B	Stable	Ozone
Yellowstone, Montana	MT	33	B	Stable	PM2.5
Kennebec, Maine	ME	33	B	Worsening	Ozone
Lawrence, Pennsylvania	PA	33	B	Stable	Ozone
Maury, Tennessee	TN	33	B	Improving	PM2.5
Nez Perce, Idaho	ID	33	C	Worsening	PM2.5
Bonner, Idaho	ID	33	C	Worsening	PM2.5
Clearfield, Pennsylvania	PA	33	B	Improving	Ozone
Jefferson, New York	NY	33	B	Stable	Ozone
Macoupin, Illinois	IL	33	B	Improving	Ozone
Rockwall, Texas	TX	33	B	Improving	Ozone
Yalobusha, Mississippi	MS	33	B	Stable	Ozone
Oswego, New York	NY	33	B	Stable	Ozone
Prince Edward, Virginia	VA	33	B	Stable	Ozone
Wyoming, Pennsylvania	PA	33	A	Improving	PM2.5
Flagler, Florida	FL	33	B	Stable	Ozone
Penobscot, Maine	ME	33	B	Improving	PM2.5
Pointe Coupee, Louisiana	LA	33	B	Stable	Ozone
Tuscola, Michigan	MI	33	B	Stable	Ozone
Adams, Ohio	OH	34	B	Stable	PM2.5
Berkeley, South Carolina	SC	34	B	Stable	Ozone
Highlands, Florida	FL	34	B	Stable	Ozone
St. Lucie, Florida	FL	34	B	Stable	Ozone
Wayne, New York	NY	34	B	Stable	Ozone
Clark, Illinois	IL	34	B	Improving	Ozone
Denali, Alaska	AK	34	B	Stable	Ozone
Gregg, Texas	TX	34	B	Stable	Ozone
Hamilton, New York	NY	34	B	Stable	Ozone
Manatee, Florida	FL	34	B	Stable	Ozone
Osceola, Florida	FL	34	B	Stable	Ozone
Posey, Indiana	IN	34	B	Improving	Ozone
Putnam, New York	NY	34	B	Stable	Ozone
Salem City, Virginia	VA	34	B	Improving	PM2.5
Androscoggin, Maine	ME	34	B	Improving	PM2.5
Carroll, Indiana	IN	34	B	Improving	Ozone
Fayette, Texas	TX	34	B	Improving	PM2.5
Hendricks, Indiana	IN	34	B	Improving	Ozone
Knox, Maine	ME	34	B	Stable	Ozone
Luzerne, Pennsylvania	PA	34	B	Stable	Ozone
Monroe, Missouri	MO	34	B	Stable	Ozone
Putnam, Tennessee	TN	34	B	Improving	PM2.5
Vilas, Wisconsin	WI	34	B	Stable	Ozone
Washington, Maine	ME	34	B	Stable	Ozone
Williams, North Dakota	ND	34	B	Stable	Ozone
Brazoria, Texas	TX	34	C	Stable	Ozone
Clark, Washington	WA	34	B	Stable	PM2.5
Dutchess, New York	NY	34	B	Stable	Ozone
Niagara, New York	NY	34	B	Improving	Ozone
Wexford, Michigan	MI	34	B	Stable	Ozone
Jo Daviess, Illinois	IL	34	B	Stable	Ozone
Lauderdale, Mississippi	MS	34	B	Stable	Ozone
St. Martin, Louisiana	LA	34	B	Improving	Ozone
Boone, Indiana	IN	35	B	Improving	Ozone
Bristol City, Virginia	VA	35	B	Improving	PM2.5
Brown, Indiana	IN	35	B	Improving	Ozone
Claiborne, Tennessee	TN	35	B	Stable	Ozone
Columbia, Georgia	GA	35	B	Improving	Ozone
Elk, Pennsylvania	PA	35	B	Stable	Ozone
Elmore, Alabama	AL	35	B	Stable	Ozone
Hunt, Texas	TX	35	B	Stable	Ozone
Kent, Rhode Island	RI	35	B	Stable	Ozone
Lake, Florida	FL	35	B	Stable	Ozone
Leavenworth, Kansas	KS	35	B	Stable	Ozone
Rockbridge, Virginia	VA	35	B	Improving	Ozone
Schoolcraft, Michigan	MI	35	B	Stable	PM2.5
Somerset, Pennsylvania	PA	35	B	Stable	Ozone
Virginia Beach City, Virginia	VA	35	B	Stable	PM2.5
Jackson, North Carolina	NC	35	A	Improving	Ozone
Charles, Virginia	VA	35	B	Stable	Ozone
Linn, Oregon	OR	35	C	Worsening	PM2.5
Shelby, Indiana	IN	35	B	Improving	Ozone
Tucker, West Virginia	WV	35	B	Stable	Ozone
Windham, Connecticut	CT	35	B	Stable	Ozone
Fauquier, Virginia	VA	35	B	Stable	Ozone
Jackson, Indiana	IN	35	A	Improving	Ozone
Martin, North Carolina	NC	35	B	Improving	Ozone
Monroe, Pennsylvania	PA	35	B	Improving	Ozone
Montgomery, Tennessee	TN	35	B	Improving	PM2.5
Morgan, Indiana	IN	35	A	Improving	Ozone
Oxford, Maine	ME	35	B	Stable	PM2.5
Prince William, Virginia	VA	35	C	Worsening	Ozone
Tompkins, New York	NY	35	B	Stable	Ozone
Indian River, Florida	FL	35	B	Improving	Ozone
Mille Lacs, Minnesota	MN	35	C	Worsening	Ozone
Northampton, North Carolina	NC	35	B	Improving	PM2.5
Dawson, Georgia	GA	35	B	Improving	Ozone
DeKalb, Tennessee	TN	35	B	Stable	Ozone
Marathon, Wisconsin	WI	35	B	Stable	Ozone
Maverick, Texas	TX	35	B	Improving	PM2.5
Morgan, Kentucky	KY	35	B	Stable	Ozone
Aroostook, Maine	ME	36	B	Improving	PM2.5
Chattooga, Georgia	GA	36	B	Stable	Ozone
Crow Wing, Minnesota	MN	36	C	Worsening	PM2.5
Manistee, Michigan	MI	36	B	Stable	Ozone
Orleans, Louisiana	LA	36	B	Improving	PM2.5
Rockingham, Virginia	VA	36	B	Stable	Ozone
Sonoma, California	CA	36	B	Improving	Ozone
Stafford, Virginia	VA	36	B	Improving	Ozone
Carteret, North Carolina	NC	36	B	Stable	Ozone
Coffee, Georgia	GA	36	B	Improving	PM2.5
Douglas, Oregon	OR	36	C	Worsening	PM2.5
Ector, Texas	TX	36	B	Improving	PM2.5
Grafton, New Hampshire	NH	36	B	Improving	Ozone
Greenup, Kentucky	KY	36	B	Stable	Ozone
McKenzie, North Dakota	ND	36	C	Stable	Ozone
Okaloosa, Florida	FL	36	B	Stable	Ozone
San Mateo, California	CA	36	B	Improving	PM2.5
Sanders, Montana	MT	36	D	Worsening	PM2.5
Sumter, Alabama	AL	36	B	Improving	PM2.5
Sumter, Georgia	GA	36	B	Stable	Ozone
Warrick, Indiana	IN	36	B	Improving	Ozone
Fayette, Ohio	OH	36	B	Stable	Ozone
Floyd, Indiana	IN	36	A	Improving	Ozone
Hood, Texas	TX	36	C	Stable	Ozone
Knox, Indiana	IN	36	C	Worsening	Ozone
Morris, New Jersey	NJ	36	B	Stable	Ozone
Phillips, Montana	MT	36	C	Stable	Ozone
Pike, Georgia	GA	36	B	Stable	Ozone
Wabash, Indiana	IN	36	B	Stable	Ozone
Washington, Oregon	OR	36	B	Stable	PM2.5
Aiken, South Carolina	SC	36	B	Improving	Ozone
Barnstable, Massachusetts	MA	36	B	Stable	Ozone
Darlington, South Carolina	SC	36	B	Improving	Ozone
Franklin, Pennsylvania	PA	36	B	Worsening	Ozone
Ouachita, Louisiana	LA	36	B	Improving	Ozone
Perry, Indiana	IN	36	B	Improving	Ozone
Roane, Tennessee	TN	36	A	Improving	PM2.5
Trigg, Kentucky	KY	36	B	Stable	Ozone
Ashland, Wisconsin	WI	36	C	Worsening	Ozone
Benzie, Michigan	MI	36	B	Improving	Ozone
Clinton, Michigan	MI	36	B	Improving	Ozone
Garfield, Utah	UT	36	B	Improving	Ozone
Marin, California	CA	36	B	Improving	PM2.5
Multnomah, Oregon	OR	36	B	Stable	PM2.5
Pasco, Florida	FL	36	B	Stable	Ozone
Smith, Texas	TX	36	C	Worsening	Ozone
Ward, North Dakota	ND	36	C	Worsening	Ozone
Caswell, North Carolina	NC	37	B	Improving	Ozone
Dyer, Tennessee	TN	37	B	Improving	PM2.5
Hancock, Maine	ME	37	B	Stable	Ozone
Huron, Michigan	MI	37	B	Stable	Ozone
Marion, Oregon	OR	37	C	Worsening	PM2.5
Valley, Idaho	ID	37	D	Worsening	PM2.5
Washington, Minnesota	MN	37	B	Improving	Ozone
Billings, North Dakota	ND	37	C	Stable	Ozone
Caroline, Virginia	VA	37	B	Improving	Ozone
Carter, Kentucky	KY	37	B	Stable	Ozone
Harrison, West Virginia	WV	37	B	Improving	PM2.5
Newton, Arkansas	AR	37	B	Stable	Ozone
Amador, California	CA	37	B	Improving	Ozone
Bucks, Pennsylvania	PA	37	B	Improving	Ozone
Chautauqua, New York	NY	37	B	Stable	Ozone
Greenbrier, West Virginia	WV	37	B	Improving	Ozone
Hancock, West Virginia	WV	37	B	Stable	Ozone
Knox, Nebraska	NE	37	C	Worsening	Ozone
Loudoun, Virginia	VA	37	B	Stable	Ozone
Merrimack, New Hampshire	NH	37	C	Worsening	Ozone
Oconee, South Carolina	SC	37	B	Improving	Ozone
Orange, New York	NY	37	B	Improving	Ozone
Washington, Rhode Island	RI	37	B	Stable	Ozone
Bennington, Vermont	VT	37	B	Stable	Ozone
Clay, Alabama	AL	37	B	Improving	PM2.5
Culberson, Texas	TX	37	C	Worsening	PM2.5
Delaware, Indiana	IN	37	B	Stable	Ozone
Dunn, North Dakota	ND	37	C	Worsening	Ozone
Horry, South Carolina	SC	37	C	Worsening	Ozone
Lenoir, North Carolina	NC	37	B	Improving	Ozone
Mason, Michigan	MI	37	B	Stable	Ozone
Norfolk, Massachusetts	MA	37	B	Stable	Ozone
Santa Cruz, California	CA	37	B	Stable	PM2.5
Tuscaloosa, Alabama	AL	37	A	Improving	Ozone
Washington, Kentucky	KY	37	B	Stable	Ozone
Arlington, Virginia	VA	37	B	Improving	Ozone
Bannock, Idaho	ID	37	C	Worsening	PM2.5
Clallam, Washington	WA	37	B	Improving	PM2.5
Door, Wisconsin	WI	37	C	Stable	Ozone
Dukes, Massachusetts	MA	37	C	Worsening	Ozone
Howard, Maryland	MD	37	B	Improving	PM2.5
Lancaster, Nebraska	NE	37	B	Stable	Ozone
LaPorte, Indiana	IN	37	B	Improving	Ozone
Mayes, Oklahoma	OK	37	B	Stable	Ozone
Monmouth, New Jersey	NJ	37	B	Stable	Ozone
Noble, Ohio	OH	37	B	Stable	Ozone
Parker, Texas	TX	37	C	Stable	Ozone
York, Maine	ME	37	B	Improving	Ozone
Alexander, North Carolina	NC	38	B	Improving	Ozone
Boone, Missouri	MO	38	B	Stable	Ozone
Fond du Lac, Wisconsin	WI	38	B	Stable	Ozone
Johnson, Texas	TX	38	C	Stable	Ozone
Josephine, Oregon	OR	38	C	Worsening	PM2.5
Orange, Florida	FL	38	B	Improving	Ozone
Rockland, New York	NY	38	B	Improving	Ozone
San Francisco, California	CA	38	B	Improving	PM2.5
Sarpy, Nebraska	NE	38	B	Improving	PM2.5
Shelby, Alabama	AL	38	B	Improving	Ozone
Terrebonne, Louisiana	LA	38	C	Worsening	PM2.5
Benton, Washington	WA	38	C	Worsening	PM2.5
Douglas, Georgia	GA	38	B	Stable	Ozone
Forest, Wisconsin	WI	38	C	Worsening	Ozone
Hillsborough, New Hampshire	NH	38	B	Stable	Ozone
Manitowoc, Wisconsin	WI	38	B	Stable	Ozone
Mercer, North Dakota	ND	38	C	Worsening	Ozone
Steuben, New York	NY	38	C	Worsening	Ozone
Wood, Ohio	OH	38	B	Stable	Ozone
Atlantic, New Jersey	NJ	38	B	Improving	Ozone
Big Horn, Wyoming	WY	38	B	Stable	Ozone
Caddo, Louisiana	LA	38	B	Stable	Ozone
Cheshire, New Hampshire	NH	38	B	Improving	PM2.5
Colbert, Alabama	AL	38	B	Improving	Ozone
Houston, Alabama	AL	38	B	Improving	Ozone
Richland, Montana	MT	38	B	Stable	Ozone
Bremer, Iowa	IA	38	C	Worsening	Ozone
Burke, North Dakota	ND	38	C	Worsening	Ozone
Chesterfield, Virginia	VA	38	B	Stable	Ozone
Edgecombe, North Carolina	NC	38	B	Improving	PM2.5
Edmonson, Kentucky	KY	38	B	Stable	Ozone
Giles, Virginia	VA	38	B	Stable	Ozone
Madison, Tennessee	TN	38	B	Stable	PM2.5
Marion, West Virginia	WV	38	B	Improving	PM2.5
Polk, Arkansas	AR	38	B	Stable	Ozone
Westchester, New York	NY	38	B	Improving	Ozone
Wilson, Tennessee	TN	38	B	Stable	Ozone
Burleigh, North Dakota	ND	38	C	Worsening	PM2.5
Goodhue, Minnesota	MN	38	C	Worsening	Ozone
Hanover, Virginia	VA	38	B	Stable	Ozone
Henry, Indiana	IN	38	B	Improving	PM2.5
Kewaunee, Wisconsin	WI	38	C	Stable	Ozone
Lee, Mississippi	MS	38	C	Worsening	Ozone
Litchfield, Connecticut	CT	38	B	Improving	Ozone
Lyon, Minnesota	MN	38	C	Worsening	PM2.5
Onondaga, New York	NY	38	C	Worsening	Ozone
Pennington, South Dakota	SD	38	C	Stable	PM2.5
Snohomish, Washington	WA	38	C	Stable	PM2.5
Suffolk City, Virginia	VA	38	B	Stable	Ozone
Erie, Pennsylvania	PA	39	B	Improving	PM2.5
Garrett, Maryland	MD	39	B	Improving	Ozone
Jasper, Missouri	MO	39	C	Worsening	Ozone
Lorain, Ohio	OH	39	B	Stable	PM2.5
Murray, Georgia	GA	39	B	Stable	Ozone
Muskegon, Michigan	MI	39	B	Stable	Ozone
Rapides, Louisiana	LA	39	B	Improving	PM2.5
Wythe, Virginia	VA	39	B	Stable	Ozone
Ashtabula, Ohio	OH	39	B	Stable	Ozone
Calvert, Maryland	MD	39	B	Improving	Ozone
Meade, South Dakota	SD	39	C	Worsening	Ozone
Middlesex, Massachusetts	MA	39	C	Worsening	Ozone
Passaic, New Jersey	NJ	39	B	Stable	Ozone
Tangipahoa, Louisiana	LA	39	B	Stable	PM2.5
Tioga, Pennsylvania	PA	39	B	Improving	Ozone
Avery, North Carolina	NC	39	B	Stable	Ozone
Charles, Maryland	MD	39	B	Improving	Ozone
Collin, Texas	TX	39	C	Worsening	Ozone
Creek, Oklahoma	OK	39	C	Worsening	Ozone
Delaware, Ohio	OH	39	B	Stable	Ozone
Hampshire, Massachusetts	MA	39	B	Stable	Ozone
Jackson, South Dakota	SD	39	B	Stable	Ozone
McMinn, Tennessee	TN	39	B	Improving	PM2.5
Napa, California	CA	39	B	Improving	PM2.5
Oakland, Michigan	MI	39	B	Improving	Ozone
Oliver, North Dakota	ND	39	C	Worsening	Ozone
Pitt, North Carolina	NC	39	B	Improving	PM2.5
Rockdale, Georgia	GA	39	C	Worsening	Ozone
Saint Louis, Minnesota	MN	39	B	Stable	PM2.5
Simpson, Kentucky	KY	39	B	Stable	Ozone
Taylor, Wisconsin	WI	39	C	Worsening	Ozone
Wood, West Virginia	WV	39	B	Improving	Ozone
Anderson, South Carolina	SC	39	B	Stable	Ozone
Archuleta, Colorado	CO	39	C	Worsening	Ozone
Box Elder, Utah	UT	39	B	Improving	Ozone
Caldwell, North Carolina	NC	39	B	Stable	Ozone
Callaway, Missouri	MO	39	B	Stable	Ozone
Chesterfield, South Carolina	SC	39	B	Improving	PM2.5
Effingham, Illinois	IL	39	B	Stable	Ozone
Glynn, Georgia	GA	39	B	Stable	PM2.5
Greene, Indiana	IN	39	B	Improving	Ozone
Rutland, Vermont	VT	39	B	Stable	PM2.5
Anderson, Tennessee	TN	39	B	Stable	Ozone
Baldwin, Alabama	AL	39	B	Stable	Ozone
Becker, Minnesota	MN	39	C	Worsening	PM2.5
Columbia, Wisconsin	WI	39	C	Stable	Ozone
Jefferson, Wisconsin	WI	39	C	Stable	Ozone
Kings, New York	NY	39	C	Worsening	PM2.5
Lee, Florida	FL	39	B	Improving	PM2.5
Lyon, Nevada	NV	39	B	Improving	Ozone
Minnehaha, South Dakota	SD	39	B	Improving	Ozone
New Hanover, North Carolina	NC	39	C	Worsening	PM2.5
Pike, Kentucky	KY	39	B	Improving	PM2.5
Stearns, Minnesota	MN	39	C	Worsening	PM2.5
Umatilla, Oregon	OR	39	C	Stable	PM2.5
Berrien, Michigan	MI	40	B	Improving	Ozone
Buncombe, North Carolina	NC	40	B	Improving	PM2.5
Cabell, West Virginia	WV	40	B	Stable	Ozone
Canadian, Oklahoma	OK	40	C	Worsening	Ozone
Cass, Michigan	MI	40	B	Improving	Ozone
Dakota, Minnesota	MN	40	C	Worsening	PM2.5
Harrison, Iowa	IA	40	C	Worsening	Ozone
Knox, Ohio	OH	40	B	Stable	Ozone
Licking, Ohio	OH	40	B	Stable	Ozone
Monongalia, West Virginia	WV	40	B	Stable	Ozone
Sainte Genevieve, Missouri	MO	40	B	Stable	Ozone
Woodbury, Iowa	IA	40	C	Worsening	PM2.5
Boone, Kentucky	KY	40	C	Worsening	Ozone
Brookings, South Dakota	SD	40	C	Worsening	Ozone
Bullitt, Kentucky	KY	40	C	Stable	Ozone
Codington, South Dakota	SD	40	D	Worsening	PM2.5
DeKalb, Alabama	AL	40	C	Stable	Ozone
Fergus, Montana	MT	40	C	Worsening	Ozone
Flathead, Montana	MT	40	C	Stable	PM2.5
Hancock, Kentucky	KY	40	B	Stable	Ozone
Johnson, Wyoming	WY	40	C	Worsening	Ozone
Kent, Maryland	MD	40	B	Improving	Ozone
Madison, Virginia	VA	40	B	Improving	Ozone
Ohio, West Virginia	WV	40	B	Improving	Ozone
Washington, Ohio	OH	40	B	Stable	Ozone
Allegan, Michigan	MI	40	B	Improving	Ozone
Anne Arundel, Maryland	MD	40	B	Improving	Ozone
Berkeley, West Virginia	WV	40	B	Improving	Ozone
Gloucester, New Jersey	NJ	40	B	Stable	Ozone
Lemhi, Idaho	ID	40	B	Improving	PM2.5
Livingston, Kentucky	KY	40	B	Stable	Ozone
Lycoming, Pennsylvania	PA	40	C	Worsening	Ozone
Monterey, California	CA	40	C	Stable	Ozone
New London, Connecticut	CT	40	C	Stable	PM2.5
Osage, Oklahoma	OK	40	C	Worsening	Ozone
Person, North Carolina	NC	40	B	Stable	Ozone
Rockingham, New Hampshire	NH	40	B	Improving	Ozone
St. Tammany, Louisiana	LA	40	B	Improving	PM2.5
Tolland, Connecticut	CT	40	B	Stable	Ozone
Union, South Dakota	SD	40	B	Stable	Ozone
Walworth, Wisconsin	WI	40	C	Stable	Ozone
Adams, Illinois	IL	40	C	Worsening	Ozone
Alachua, Florida	FL	40	B	Stable	PM2.5
Arkansas, Arkansas	AR	40	B	Improving	PM2.5
Baker, Florida	FL	40	C	Worsening	Ozone
Chittenden, Vermont	VT	40	C	Stable	Ozone
Cumberland, Maine	ME	40	B	Improving	PM2.5
Iberville, Louisiana	LA	40	C	Worsening	Ozone
Jessamine, Kentucky	KY	40	B	Stable	Ozone
Lincoln, Missouri	MO	40	C	Stable	Ozone
Miami, Ohio	OH	40	B	Stable	Ozone
Perry, Missouri	MO	40	B	Stable	Ozone
Wakulla, Florida	FL	40	C	Stable	PM2.5
Bradford, Pennsylvania	PA	40	C	Worsening	Ozone
Clinton, Missouri	MO	40	B	Stable	Ozone
Henry, Georgia	GA	40	B	Improving	PM2.5
Indiana, Pennsylvania	PA	40	C	Worsening	Ozone
Lake, Illinois	IL	40	C	Worsening	Ozone
Middlesex, Connecticut	CT	40	B	Stable	Ozone
Ocean, New Jersey	NJ	40	C	Stable	PM2.5
Oldham, Kentucky	KY	40	B	Stable	Ozone
Portage, Ohio	OH	40	C	Worsening	Ozone
Rock, Wisconsin	WI	40	C	Stable	Ozone
Union, North Carolina	NC	40	B	Improving	Ozone
Williamson, Tennessee	TN	40	C	Worsening	Ozone
Andrew, Missouri	MO	41	C	Stable	Ozone
Canyon, Idaho	ID	41	C	Worsening	PM2.5
Granville, North Carolina	NC	41	B	Stable	Ozone
Greene, Ohio	OH	41	B	Improving	PM2.5
Jackson, Arkansas	AR	41	B	Stable	PM2.5
Madison, Ohio	OH	41	B	Stable	Ozone
Ramsey, Minnesota	MN	41	B	Improving	PM2.5
San Benito, California	CA	41	C	Stable	Ozone
Seminole, Florida	FL	41	C	Worsening	Ozone
Sheboygan, Wisconsin	WI	41	C	Stable	Ozone
Spokane, Washington	WA	41	B	Improving	PM2.5
Sullivan, Tennessee	TN	41	C	Stable	PM2.5
Warren, New Jersey	NJ	41	C	Stable	PM2.5
Weston, Wyoming	WY	41	B	Stable	Ozone
Albany, New York	NY	41	C	Stable	PM2.5
Anoka, Minnesota	MN	41	C	Stable	Ozone
Ashley, Arkansas	AR	41	B	Improving	PM2.5
Bristol, Massachusetts	MA	41	B	Stable	Ozone
Cobb, Georgia	GA	41	B	Improving	Ozone
Custer, South Dakota	SD	41	C	Stable	Ozone
Essex, Massachusetts	MA	41	B	Stable	Ozone
Essex, New York	NY	41	C	Stable	Ozone
Lake, Ohio	OH	41	B	Improving	PM2.5
Loudon, Tennessee	TN	41	B	Improving	PM2.5
Powder River, Montana	MT	41	C	Worsening	Ozone
Racine, Wisconsin	WI	41	C	Stable	Ozone
Richmond, New York	NY	41	B	Improving	PM2.5
Siskiyou, California	CA	41	D	Worsening	Ozone
Swain, North Carolina	NC	41	B	Improving	PM2.5
Cass, North Dakota	ND	41	C	Worsening	Ozone
Clinton, Ohio	OH	41	B	Stable	Ozone
Geauga, Ohio	OH	41	B	Stable	Ozone
Greene, Pennsylvania	PA	41	C	Worsening	Ozone
Hampton City, Virginia	VA	41	C	Stable	PM2.5
Jefferson, Tennessee	TN	41	B	Improving	Ozone
Monroe, Indiana	IN	41	C	Stable	PM2.5
Montgomery, Maryland	MD	41	B	Improving	PM2.5
Scott, Minnesota	MN	41	C	Worsening	Ozone
Brown, Wisconsin	WI	41	C	Stable	PM2.5
Collier, Florida	FL	41	C	Stable	PM2.5
Edgefield, South Carolina	SC	41	C	Stable	PM2.5
Ellis, Texas	TX	41	B	Improving	PM2.5
Lackawanna, Pennsylvania	PA	41	B	Improving	PM2.5
Plymouth, Massachusetts	MA	41	C	Stable	PM2.5
Sheridan, Wyoming	WY	41	C	Worsening	Ozone
Wright, Minnesota	MN	41	C	Worsening	PM2.5
Johnston, Oklahoma	OK	41	C	Worsening	Ozone
Cass, Missouri	MO	41	B	Improving	PM2.5
Churchill, Nevada	NV	41	B	Improving	Ozone
Clay, Missouri	MO	41	B	Improving	Ozone
Converse, Wyoming	WY	41	B	Stable	Ozone
Dorchester, Maryland	MD	41	B	Improving	Ozone
Lincoln, North Carolina	NC	41	B	Stable	Ozone
Montgomery, Iowa	IA	41	B	Improving	PM2.5
Olmsted, Minnesota	MN	41	C	Worsening	PM2.5
Rockingham, North Carolina	NC	41	B	Stable	Ozone
Sequoyah, Oklahoma	OK	41	C	Worsening	PM2.5
Trego, Kansas	KS	41	C	Worsening	Ozone
Tuolumne, California	CA	41	B	Improving	Ozone
Nassau, Florida	FL	42	B	Improving	PM2.5
Berkshire, Massachusetts	MA	42	B	Improving	PM2.5
Butte, Idaho	ID	42	C	Worsening	Ozone
Coos, New Hampshire	NH	42	B	Stable	Ozone
Cumberland, New Jersey	NJ	42	C	Worsening	Ozone
Iron, Utah	UT	42	B	Improving	Ozone
Monroe, New York	NY	42	C	Stable	PM2.5
Prince George's, Maryland	MD	42	B	Improving	Ozone
Richmond City, Virginia	VA	42	C	Worsening	PM2.5
Suffolk, New York	NY	42	C	Improving	Ozone
Washington, Maryland	MD	42	B	Improving	PM2.5
Carroll, Maryland	MD	42	B	Stable	Ozone
Cecil, Maryland	MD	42	B	Improving	PM2.5
Fairbanks North Star, Alaska	AK	42	C	Improving	PM2.5
Ingham, Michigan	MI	42	B	Improving	PM2.5
Lee, Iowa	IA	42	B	Stable	PM2.5
Lexington, South Carolina	SC	42	B	Improving	PM2.5
Medina, Ohio	OH	42	B	Improving	PM2.5
Mercer, Pennsylvania	PA	42	B	Improving	Ozone
Ozaukee, Wisconsin	WI	42	C	Worsening	PM2.5
Palm Beach, Florida	FL	42	B	Stable	PM2.5
Pottawattamie, Iowa	IA	42	C	Stable	PM2.5
Saint Charles, Missouri	MO	42	C	Stable	Ozone
Sauk, Wisconsin	WI	42	C	Worsening	PM2.5
Adair, Oklahoma	OK	42	C	Stable	PM2.5
Brewster, Texas	TX	42	C	Stable	Ozone
Catano, Puerto Rico	PR	42	D	Worsening	PM2.5
Cedar, Missouri	MO	42	C	Stable	PM2.5
Clermont, Ohio	OH	42	B	Improving	PM2.5
Florence, South Carolina	SC	42	B	Improving	PM2.5
Franklin, Massachusetts	MA	42	C	Stable	PM2.5
Frederick, Maryland	MD	42	B	Stable	Ozone
Genesee, Michigan	MI	42	B	Improving	PM2.5
La Crosse, Wisconsin	WI	42	C	Worsening	PM2.5
Martin, Florida	FL	42	C	Stable	PM2.5
Moffat, Colorado	CO	42	C	Worsening	Ozone
Natrona, Wyoming	WY	42	C	Stable	Ozone
Roanoke, Virginia	VA	42	B	Stable	PM2.5
Spencer, Indiana	IN	42	B	Improving	PM2.5
Westmoreland, Pennsylvania	PA	42	B	Improving	PM2.5
Albemarle, Virginia	VA	42	C	Stable	PM2.5
Allen, Indiana	IN	42	B	Improving	PM2.5
Allen, Ohio	OH	42	C	Worsening	Ozone
Idaho, Idaho	ID	42	C	Worsening	PM2.5
Pulaski, Kentucky	KY	42	C	Worsening	Ozone
Stevens, Washington	WA	42	C	Worsening	PM2.5
Delta, Colorado	CO	42	C	Worsening	Ozone
Eau Claire, Wisconsin	WI	42	C	Worsening	PM2.5
Frederick, Virginia	VA	42	C	Stable	PM2.5
Grant, Wisconsin	WI	42	C	Worsening	PM2.5
Hartford, Connecticut	CT	42	B	Improving	PM2.5
Kanawha, West Virginia	WV	42	C	Worsening	PM2.5
Brevard, Florida	FL	43	C	Worsening	PM2.5
Douglas, Nebraska	NE	43	B	Improving	PM2.5
Glenn, California	CA	43	C	Improving	Ozone
Hunterdon, New Jersey	NJ	43	C	Stable	Ozone
Kent, Delaware	DE	43	B	Stable	Ozone
Laramie, Wyoming	WY	43	C	Stable	Ozone
Randall, Texas	TX	43	C	Stable	Ozone
Fayette, Pennsylvania	PA	43	C	Worsening	PM2.5
Henrico, Virginia	VA	43	C	Stable	PM2.5
Kaufman, Texas	TX	43	C	Stable	PM2.5
Middlesex, New Jersey	NJ	43	C	Worsening	PM2.5
Pierce, Washington	WA	43	C	Stable	Ozone
Richland, South Carolina	SC	43	B	Improving	PM2.5
Rio Arriba, New Mexico	NM	43	B	Stable	Ozone
Valencia, New Mexico	NM	43	B	Stable	Ozone
Van Buren, Iowa	IA	43	B	Improving	PM2.5
Baltimore (City), Maryland	MD	43	B	Improving	PM2.5
Bartholomew, Indiana	IN	43	B	Improving	PM2.5
Chippewa, Michigan	MI	43	C	Worsening	PM2.5
Elkhart, Indiana	IN	43	B	Improving	PM2.5
Etowah, Alabama	AL	43	B	Improving	PM2.5
Graham, North Carolina	NC	43	C	Stable	Ozone
Johnston, North Carolina	NC	43	C	Stable	PM2.5
Navarro, Texas	TX	43	B	Stable	PM2.5
Palo Alto, Iowa	IA	43	B	Improving	PM2.5
Polk, Florida	FL	43	B	Improving	PM2.5
Santa Cruz, Arizona	AZ	43	C	Worsening	PM2.5
Sevier, Tennessee	TN	43	B	Stable	Ozone
Yavapai, Arizona	AZ	43	B	Stable	Ozone
Yolo, California	CA	43	B	Improving	Ozone
Dubois, Indiana	IN	43	B	Improving	PM2.5
El Dorado, California	CA	43	C	Stable	Ozone
Kane, Illinois	IL	43	C	Worsening	Ozone
Lehigh, Pennsylvania	PA	43	C	Worsening	PM2.5
Missaukee, Michigan	MI	43	C	Worsening	Ozone
Outagamie, Wisconsin	WI	43	C	Stable	PM2.5
Sumner, Tennessee	TN	43	C	Stable	PM2.5
Sussex, Delaware	DE	43	B	Improving	Ozone
Tippecanoe, Indiana	IN	43	B	Improving	PM2.5
Asotin, Washington	WA	43	D	Worsening	PM2.5
Boise, Idaho	ID	43	C	Stable	PM2.5
Citrus, Florida	FL	43	C	Worsening	PM2.5
Floyd, Georgia	GA	43	B	Improving	PM2.5
Haywood, North Carolina	NC	43	B	Stable	Ozone
Jefferson, Missouri	MO	43	B	Improving	PM2.5
McLennan, Texas	TX	43	C	Worsening	Ozone
Shoshone, Idaho	ID	43	B	Improving	PM2.5
Teton, Wyoming	WY	43	C	Stable	Ozone
Worcester, Massachusetts	MA	43	C	Stable	Ozone
Love, Oklahoma	OK	44	C	Worsening	Ozone
Boyd, Kentucky	KY	44	B	Improving	PM2.5
Buchanan, Missouri	MO	44	B	Improving	PM2.5
Calaveras, California	CA	44	B	Improving	Ozone
Campbell, Kentucky	KY	44	B	Improving	PM2.5
Carbon, Utah	UT	44	B	Stable	Ozone
Dodge, Wisconsin	WI	44	C	Worsening	Ozone
Harney, Oregon	OR	44	C	Worsening	PM2.5
Hudson, New Jersey	NJ	44	B	Improving	PM2.5
Johnson, Kansas	KS	44	C	Worsening	Ozone
Montgomery, North Carolina	NC	44	C	Stable	PM2.5
Montgomery, Pennsylvania	PA	44	C	Stable	PM2.5
Muscatine, Iowa	IA	44	B	Improving	PM2.5
Navajo, Arizona	AZ	44	C	Stable	Ozone
Orange, Texas	TX	44	C	Stable	PM2.5
Ottawa, Michigan	MI	44	C	Worsening	Ozone
Perry, Kentucky	KY	44	B	Improving	PM2.5
Carson City, Nevada	NV	44	C	Stable	Ozone
Catawba, North Carolina	NC	44	B	Improving	PM2.5
Greene, Missouri	MO	44	C	Stable	PM2.5
Hardin, Kentucky	KY	44	B	Improving	PM2.5
Howard, Indiana	IN	44	B	Improving	PM2.5
Jefferson, Louisiana	LA	44	C	Stable	PM2.5
Lewis and Clark, Montana	MT	44	C	Stable	Ozone
Sandoval, New Mexico	NM	44	C	Worsening	Ozone
Shasta, California	CA	44	C	Stable	Ozone
Tooele, Utah	UT	44	C	Worsening	Ozone
Trumbull, Ohio	OH	44	C	Stable	PM2.5
Cumberland, North Carolina	NC	44	B	Stable	PM2.5
Harford, Maryland	MD	44	B	Improving	PM2.5
Lawrence, Ohio	OH	44	B	Improving	PM2.5
New York, New York	NY	44	B	Improving	PM2.5
Pickens, South Carolina	SC	44	C	Worsening	Ozone
San Juan, Utah	UT	44	C	Stable	Ozone
Santa Fe, New Mexico	NM	44	C	Stable	Ozone
St. Clair, Michigan	MI	44	C	Stable	PM2.5
Suffolk, Massachusetts	MA	44	B	Improving	PM2.5
Warren, Kentucky	KY	44	C	Stable	PM2.5
White Pine, Nevada	NV	44	C	Stable	Ozone
Blair, Pennsylvania	PA	44	B	Improving	PM2.5
Hampden, Massachusetts	MA	44	C	Stable	PM2.5
Lea, New Mexico	NM	44	C	Stable	Ozone
Lucas, Ohio	OH	44	B	Improving	PM2.5
Macomb, Michigan	MI	44	C	Worsening	Ozone
Marion, Florida	FL	44	C	Stable	PM2.5
Northampton, Pennsylvania	PA	44	B	Improving	PM2.5
Volusia, Florida	FL	44	C	Worsening	PM2.5
Washington, Utah	UT	44	C	Stable	Ozone
York, South Carolina	SC	44	C	Worsening	Ozone
McClain, Oklahoma	OK	44	C	Worsening	Ozone
Campbell, Wyoming	WY	44	C	Stable	Ozone
Centre, Pennsylvania	PA	44	B	Improving	PM2.5
Erie, New York	NY	44	B	Improving	PM2.5
Jackson, Oregon	OR	44	C	Stable	PM2.5
Klamath, Oregon	OR	44	C	Stable	PM2.5
Montezuma, Colorado	CO	44	C	Stable	Ozone
Polk, Iowa	IA	44	C	Stable	PM2.5
SONORA, Country Of Mexico	MX	44	D	Worsening	Ozone
Yancey, North Carolina	NC	44	C	Stable	Ozone
Ada, Idaho	ID	45	C	Worsening	Ozone
Bell, Kentucky	KY	45	C	Worsening	Ozone
Bell, Texas	TX	45	C	Worsening	Ozone
Blount, Tennessee	TN	45	C	Stable	Ozone
Clayton, Georgia	GA	45	B	Improving	PM2.5
La Paz, Arizona	AZ	45	C	Stable	Ozone
Morgan, Alabama	AL	45	C	Stable	PM2.5
Randolph, Illinois	IL	45	C	Stable	PM2.5
Solano, California	CA	45	B	Improving	PM2.5
Warren, Ohio	OH	45	B	Improving	PM2.5
Carter, Oklahoma	OK	45	C	Worsening	PM2.5
Cochise, Arizona	AZ	45	B	Stable	Ozone
Crittenden, Arkansas	AR	45	C	Worsening	PM2.5
Dewey, Oklahoma	OK	45	C	Stable	PM2.5
Fayette, Kentucky	KY	45	C	Stable	PM2.5
Guilford, North Carolina	NC	45	C	Stable	PM2.5
Hamilton, Indiana	IN	45	C	Improving	PM2.5
Kent, Michigan	MI	45	C	Stable	PM2.5
Rowan, North Carolina	NC	45	C	Stable	PM2.5
Sarasota, Florida	FL	45	B	Stable	PM2.5
Tehama, California	CA	45	C	Stable	Ozone
Champaign, Illinois	IL	45	C	Worsening	PM2.5
Chester, Pennsylvania	PA	45	B	Improving	PM2.5
Christian, Kentucky	KY	45	C	Worsening	Ozone
Coconino, Arizona	AZ	45	C	Stable	Ozone
Garland, Arkansas	AR	45	B	Stable	PM2.5
Lenawee, Michigan	MI	45	C	Stable	PM2.5
Providence, Rhode Island	RI	45	B	Improving	PM2.5
Saint Louis, Missouri	MO	45	B	Improving	PM2.5
Sedgwick, Kansas	KS	45	C	Worsening	Ozone
Armstrong, Pennsylvania	PA	45	B	Improving	PM2.5
Baltimore, Maryland	MD	45	C	Stable	Ozone
Columbia, Florida	FL	45	C	Worsening	PM2.5
Grant, Oregon	OR	45	C	Worsening	PM2.5
Kenosha, Wisconsin	WI	45	C	Stable	Ozone
King, Washington	WA	45	C	Improving	PM2.5
Kleberg, Texas	TX	45	C	Worsening	PM2.5
Santa Rosa, Florida	FL	45	C	Stable	PM2.5
Essex, New Jersey	NJ	45	C	Worsening	PM2.5
Black Hawk, Iowa	IA	45	B	Improving	PM2.5
Charleston, South Carolina	SC	45	C	Stable	PM2.5
Galveston, Texas	TX	45	C	Worsening	Ozone
Hancock, Mississippi	MS	45	C	Worsening	PM2.5
Lafayette, Louisiana	LA	45	B	Improving	PM2.5
Lane, Oregon	OR	45	C	Stable	PM2.5
Mesa, Colorado	CO	45	B	Improving	Ozone
Miami-Dade, Florida	FL	45	B	Improving	PM2.5
New Haven, Connecticut	CT	45	C	Improving	PM2.5
Preble, Ohio	OH	45	C	Stable	PM2.5
Berks, Pennsylvania	PA	46	B	Improving	PM2.5
Gilpin, Colorado	CO	46	C	Worsening	Ozone
Grand, Colorado	CO	46	C	Worsening	Ozone
Gunnison, Colorado	CO	46	C	Stable	Ozone
Jersey, Illinois	IL	46	C	Worsening	PM2.5
La Plata, Colorado	CO	46	C	Stable	Ozone
Porter, Indiana	IN	46	C	Improving	PM2.5
Russell, Alabama	AL	46	B	Improving	PM2.5
Sangamon, Illinois	IL	46	D	Worsening	PM2.5
Sweetwater, Wyoming	WY	46	C	Stable	Ozone
Bergen, New Jersey	NJ	46	C	Stable	PM2.5
Bronx, New York	NY	46	C	Improving	PM2.5
Denton, Texas	TX	46	C	Stable	Ozone
Gila, Arizona	AZ	46	C	Stable	Ozone
Hamilton, Florida	FL	46	C	Stable	PM2.5
Harrison, Texas	TX	46	C	Worsening	PM2.5
Lebanon, Pennsylvania	PA	46	B	Improving	PM2.5
Lowndes, Georgia	GA	46	B	Improving	PM2.5
Mendocino, California	CA	46	C	Worsening	PM2.5
Muscogee, Georgia	GA	46	C	Stable	PM2.5
Sublette, Wyoming	WY	46	C	Stable	Ozone
Cumberland, Pennsylvania	PA	46	B	Improving	PM2.5
Dane, Wisconsin	WI	46	C	Worsening	PM2.5
Fairfield, Connecticut	CT	46	C	Improving	PM2.5
McCracken, Kentucky	KY	46	C	Improving	PM2.5
Mercer, New Jersey	NJ	46	C	Stable	PM2.5
Santa Barbara, California	CA	46	B	Improving	PM2.5
Shawnee, Kansas	KS	46	C	Worsening	PM2.5
Summit, Ohio	OH	46	C	Stable	PM2.5
Weber, Utah	UT	46	C	Improving	Ozone
Adams, Pennsylvania	PA	46	C	Stable	Ozone
Comanche, Oklahoma	OK	46	C	Stable	Ozone
Davidson, North Carolina	NC	46	B	Improving	PM2.5
Fremont, Wyoming	WY	46	C	Stable	Ozone
Mahoning, Ohio	OH	46	C	Stable	PM2.5
San Juan, New Mexico	NM	46	C	Stable	Ozone
Washington, Arkansas	AR	46	C	Worsening	PM2.5
Washtenaw, Michigan	MI	46	C	Stable	PM2.5
Arapahoe, Colorado	CO	46	C	Stable	Ozone
Davis, Utah	UT	46	C	Worsening	Ozone
El Paso, Colorado	CO	46	C	Stable	Ozone
Hamilton, Illinois	IL	46	C	Worsening	PM2.5
Jackson, Mississippi	MS	46	D	Worsening	PM2.5
Madison, Indiana	IN	46	C	Stable	PM2.5
Queens, New York	NY	46	C	Stable	PM2.5
Bossier, Louisiana	LA	47	C	Worsening	PM2.5
Cache, Utah	UT	47	C	Stable	Ozone
Fairfax, Virginia	VA	47	C	Stable	PM2.5
Nevada, California	CA	47	C	Stable	Ozone
Pinellas, Florida	FL	47	C	Stable	PM2.5
San Miguel, Colorado	CO	47	C	Worsening	Ozone
Whitley, Indiana	IN	47	C	Stable	PM2.5
Bay, Florida	FL	47	C	Worsening	PM2.5
Daviess, Kentucky	KY	47	C	Stable	PM2.5
Peoria, Illinois	IL	47	C	Stable	PM2.5
Rio Blanco, Colorado	CO	47	C	Stable	Ozone
Spartanburg, South Carolina	SC	47	C	Improving	PM2.5
Webb, Texas	TX	47	B	Improving	PM2.5
Bibb, Georgia	GA	47	C	Stable	PM2.5
Bolivar, Mississippi	MS	47	C	Worsening	PM2.5
Jefferson, Colorado	CO	47	D	Stable	Ozone
Rock Island, Illinois	IL	47	D	Worsening	PM2.5
Washington, Oklahoma	OK	47	C	Worsening	PM2.5
West Baton Rouge, Louisiana	LA	47	C	Stable	PM2.5
Hennepin, Minnesota	MN	47	C	Improving	PM2.5
York, Pennsylvania	PA	47	B	Improving	PM2.5
Chatham, Georgia	GA	47	C	Stable	PM2.5
Colusa, California	CA	47	C	Stable	PM2.5
Douglas, Colorado	CO	47	D	Worsening	Ozone
Eddy, New Mexico	NM	47	D	Worsening	Ozone
Hall, Georgia	GA	47	C	Improving	PM2.5
Kalamazoo, Michigan	MI	47	C	Worsening	PM2.5
Leon, Florida	FL	47	B	Improving	PM2.5
Nueces, Texas	TX	47	C	Stable	PM2.5
Pittsburg, Oklahoma	OK	47	C	Worsening	PM2.5
Sumner, Kansas	KS	47	C	Worsening	Ozone
Union, Arkansas	AR	47	C	Worsening	PM2.5
Washington, Georgia	GA	47	C	Worsening	PM2.5
Cambria, Pennsylvania	PA	48	B	Improving	PM2.5
DeSoto, Mississippi	MS	48	C	Stable	PM2.5
Gwinnett, Georgia	GA	48	C	Stable	PM2.5
Harrison, Mississippi	MS	48	C	Stable	PM2.5
Holmes, Florida	FL	48	C	Worsening	PM2.5
Albany, Wyoming	WY	48	C	Stable	Ozone
Benewah, Idaho	ID	48	C	Stable	PM2.5
Hidalgo, Texas	TX	48	C	Stable	PM2.5
Montgomery, Texas	TX	48	C	Stable	PM2.5
Waukesha, Wisconsin	WI	48	C	Worsening	PM2.5
Lafourche, Louisiana	LA	48	C	Worsening	PM2.5
New Castle, Delaware	DE	48	C	Improving	PM2.5
Winnebago, Illinois	IL	48	D	Worsening	Ozone
Yuma, Arizona	AZ	48	C	Stable	Ozone
Clear Creek, Colorado	CO	48	C	Stable	Ozone
Contra Costa, California	CA	48	C	Stable	PM2.5
Duchesne, Utah	UT	48	C	Worsening	Ozone
Houston, Georgia	GA	48	C	Stable	PM2.5
Jefferson, Texas	TX	48	C	Stable	PM2.5
Dauphin, Pennsylvania	PA	48	C	Improving	PM2.5
East Baton Rouge, Louisiana	LA	48	B	Improving	PM2.5
Johnson, Iowa	IA	48	C	Worsening	PM2.5
Kay, Oklahoma	OK	48	B	Improving	PM2.5
Madison, Alabama	AL	48	C	Worsening	PM2.5
McLean, Illinois	IL	48	D	Worsening	PM2.5
Neosho, Kansas	KS	48	D	Worsening	Ozone
St. Bernard, Louisiana	LA	48	C	Stable	PM2.5
Utah, Utah	UT	48	C	Stable	Ozone
Wake, North Carolina	NC	48	B	Improving	PM2.5
District of Columbia, District Of Columbia	DC	49	C	Improving	PM2.5
Knox, Tennessee	TN	49	C	Stable	PM2.5
Mariposa, California	CA	49	C	Improving	Ozone
Vanderburgh, Indiana	IN	49	C	Stable	PM2.5
Camden, New Jersey	NJ	49	C	Improving	PM2.5
Clarke, Georgia	GA	49	C	Worsening	PM2.5
Escambia, Florida	FL	49	C	Worsening	PM2.5
Forsyth, North Carolina	NC	49	C	Stable	PM2.5
Greenville, South Carolina	SC	49	C	Stable	PM2.5
Linn, Iowa	IA	49	C	Worsening	PM2.5
Marshall, West Virginia	WV	49	C	Stable	PM2.5
McHenry, Illinois	IL	49	C	Worsening	PM2.5
Mobile, Alabama	AL	49	C	Stable	PM2.5
Okanogan, Washington	WA	49	C	Worsening	PM2.5
Clark, Ohio	OH	49	C	Stable	PM2.5
Macon, Illinois	IL	49	C	Worsening	PM2.5
Santa Clara, California	CA	49	C	Stable	PM2.5
Broward, Florida	FL	49	C	Worsening	PM2.5
DuPage, Illinois	IL	49	D	Worsening	PM2.5
Durham, North Carolina	NC	49	C	Worsening	PM2.5
Milwaukee, Wisconsin	WI	49	C	Worsening	PM2.5
Park, Colorado	CO	49	C	Worsening	Ozone
Yakima, Washington	WA	49	C	Worsening	PM2.5
Hamilton, Tennessee	TN	49	C	Worsening	PM2.5
Vigo, Indiana	IN	49	C	Improving	PM2.5
Garfield, Colorado	CO	50	C	Worsening	Ozone
Livingston, Louisiana	LA	50	C	Stable	PM2.5
Mecklenburg, North Carolina	NC	50	C	Improving	PM2.5
Saint Clair, Illinois	IL	50	C	Worsening	PM2.5
St. Joseph, Indiana	IN	50	C	Stable	PM2.5
Butler, Ohio	OH	50	D	Worsening	Ozone
Forrest, Mississippi	MS	50	C	Stable	PM2.5
Walker, Georgia	GA	50	C	Stable	PM2.5
Washington, Pennsylvania	PA	50	B	Improving	PM2.5
Adams, Colorado	CO	50	C	Worsening	Ozone
Boulder, Colorado	CO	50	D	Worsening	Ozone
Clark, Indiana	IN	50	C	Stable	PM2.5
Shelby, Tennessee	TN	50	C	Stable	PM2.5
Washoe, Nevada	NV	50	C	Stable	Ozone

Frequently Asked Questions

Air quality is satisfactory, posing little or no health risk. The AQI (Air Quality Index) is a standardized EPA measure from 0-500 that communicates daily air quality levels.

932 of 1,020 monitored US cities have a 5-year average AQI in the good range (0-50).

Yes. When AQI is in the Good range (0-50), air quality poses little or no health risk. All outdoor activities, including running, cycling, and sports, are safe for everyone.

Sources: EPA Air Quality System (AQS)

Last updated: April 2026

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