Wisconsin(WI)

Air quality overview and monitoring data — 2025

768

Monitoring Sites

6,416

Active Monitors

66

Counties with Data

134

Cities Monitored

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County Air Quality

CountyMedian AQI90th %ileMax AQIGoodModerateUSGUnhealthy
Jackson29621101143420
Monroe3160114912820
Sauk34571191443610
Ozaukee35611401463140
Marathon36591131443420
Brown37581541433611
Grant37651191314910
Manitowoc375480811100
Taylor3748972271600
Eau Claire38591591413721
Outagamie38581521423801
Ashland39581881552321
Dodge39611371394210
Fond du Lac39508084800
Dane40611361305010
Door405893781300
Kenosha40641281423450
La Crosse405490811100
Forest41611551413321
Jefferson4154105761510
Kewaunee416787801200
Milwaukee41671291265150
Racine4167122771230
Sheboygan4167101771410
Vilas4154105801110
Waukesha41611151314730
Columbia4254108771310
Rock426493672500
Walworth4467112692120

Pollutant Trends

Ozone

No data available

PM2.5

No data available

PM10

No data available

CO

No data available

NO2

No data available

SO2

No data available