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AirHistory

Air Quality in Wisconsin

10-year air quality trends for 27 monitored areas in Wisconsin.

See full Wisconsin air quality rankings →
27
Cities
41
Avg AQI (5yr)
1
Improving
3
Stable
23
Worsening

All Monitored Areas in Wisconsin

Fond du Lac, Wisconsin

Fond du Lac County · AQI 38 (5yr avg) · Stable · Ozone

B

Marathon, Wisconsin

Marathon County · AQI 35 (5yr avg) · Stable · Ozone

B

Vilas, Wisconsin

Vilas County · AQI 34 (5yr avg) · Stable · Ozone

B

Manitowoc, Wisconsin

Manitowoc County · AQI 38 (5yr avg) · Stable · Ozone

B

Door, Wisconsin

Door County · AQI 37 (5yr avg) · Stable · Ozone

C

Jefferson, Wisconsin

Jefferson County · AQI 39 (5yr avg) · Stable · Ozone

C

Kewaunee, Wisconsin

Kewaunee County · AQI 38 (5yr avg) · Stable · Ozone

C

Columbia, Wisconsin

Columbia County · AQI 39 (5yr avg) · Stable · Ozone

C

Brown, Wisconsin

Brown County · AQI 41 (5yr avg) · Stable · PM2.5

C

Forest, Wisconsin

Forest County · AQI 38 (5yr avg) · Worsening · Ozone

C

Rock, Wisconsin

Rock County · AQI 40 (5yr avg) · Stable · Ozone

C

Taylor, Wisconsin

Taylor County · AQI 39 (5yr avg) · Worsening · Ozone

C

Walworth, Wisconsin

Walworth County · AQI 40 (5yr avg) · Stable · Ozone

C

Ashland, Wisconsin

Ashland County · AQI 36 (5yr avg) · Worsening · Ozone

C

Racine, Wisconsin

Racine County · AQI 41 (5yr avg) · Stable · Ozone

C

Sheboygan, Wisconsin

Sheboygan County · AQI 41 (5yr avg) · Stable · Ozone

C

Dodge, Wisconsin

Dodge County · AQI 44 (5yr avg) · Worsening · Ozone

C

Kenosha, Wisconsin

Kenosha County · AQI 45 (5yr avg) · Stable · Ozone

C

La Crosse, Wisconsin

La Crosse County · AQI 42 (5yr avg) · Worsening · PM2.5

C

Outagamie, Wisconsin

Outagamie County · AQI 43 (5yr avg) · Stable · PM2.5

C

Ozaukee, Wisconsin

Ozaukee County · AQI 42 (5yr avg) · Worsening · PM2.5

C

Sauk, Wisconsin

Sauk County · AQI 42 (5yr avg) · Worsening · PM2.5

C

Dane, Wisconsin

Dane County · AQI 46 (5yr avg) · Worsening · PM2.5

C

Grant, Wisconsin

Grant County · AQI 42 (5yr avg) · Worsening · PM2.5

C

Eau Claire, Wisconsin

Eau Claire County · AQI 42 (5yr avg) · Worsening · PM2.5

C

Milwaukee, Wisconsin

Milwaukee County · AQI 49 (5yr avg) · Worsening · PM2.5

C

Waukesha, Wisconsin

Waukesha County · AQI 48 (5yr avg) · Worsening · PM2.5

C
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Frequently Asked Questions

Wisconsin has 27 monitored areas with an average 5-year AQI of 41 and an average Air Quality Grade of B. 1 cities are improving, 23 are worsening, and 3 are stable.

Fond du Lac, Wisconsin has the best Air Quality Grade (B) in Wisconsin with a 5-year average AQI of 38.

Of 27 monitored areas in Wisconsin, 1 are showing improving trends, 23 are worsening, and 3 remain stable over the past decade.

Sources: EPA Air Quality System (AQS)
Last updated: