Air Quality in Iowa
10-year air quality trends for 16 monitored areas in Iowa.
See full Iowa air quality rankings →All Monitored Areas in Iowa
Cerro Gordo, Iowa
Cerro Gordo County · AQI 18 (5yr avg) · Worsening · PM10
Black Hawk, Iowa
Black Hawk County · AQI 45 (5yr avg) · Improving · PM2.5
Muscatine, Iowa
Muscatine County · AQI 44 (5yr avg) · Improving · PM2.5
Van Buren, Iowa
Van Buren County · AQI 43 (5yr avg) · Improving · PM2.5
Montgomery, Iowa
Montgomery County · AQI 41 (5yr avg) · Improving · PM2.5
Palo Alto, Iowa
Palo Alto County · AQI 43 (5yr avg) · Improving · PM2.5
Lee, Iowa
Lee County · AQI 42 (5yr avg) · Stable · PM2.5
Scott, Iowa
Scott County · AQI 52 (5yr avg) · Improving · PM2.5
Clinton, Iowa
Clinton County · AQI 51 (5yr avg) · Improving · PM2.5
Pottawattamie, Iowa
Pottawattamie County · AQI 42 (5yr avg) · Stable · PM2.5
Woodbury, Iowa
Woodbury County · AQI 40 (5yr avg) · Worsening · PM2.5
Bremer, Iowa
Bremer County · AQI 38 (5yr avg) · Worsening · Ozone
Harrison, Iowa
Harrison County · AQI 40 (5yr avg) · Worsening · Ozone
Polk, Iowa
Polk County · AQI 44 (5yr avg) · Stable · PM2.5
Johnson, Iowa
Johnson County · AQI 48 (5yr avg) · Worsening · PM2.5
Linn, Iowa
Linn County · AQI 49 (5yr avg) · Worsening · PM2.5
Frequently Asked Questions
Iowa has 16 monitored areas with an average 5-year AQI of 42 and an average Air Quality Grade of B. 8 cities are improving, 7 are worsening, and 1 are stable.
Cerro Gordo, Iowa has the best Air Quality Grade (B) in Iowa with a 5-year average AQI of 18.
Of 16 monitored areas in Iowa, 8 are showing improving trends, 7 are worsening, and 1 remain stable over the past decade.