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Noise monitoring program
Active Air Quality Notification
  • An air quality ADVISORY for Unhealthy PM2.5 levels is in effect from 8/4/2025 12:00 to 8/5/2025 12:00 for these counties: Adams,Ashland,Barron,Bayfield,Brown,Buffalo,Burnett,Calumet,Chippewa,Clark,Columbia,Crawford,Dane,Dodge,Door,Douglas,Dunn,Eau Claire,Florence,Fond du Lac,Forest,Grant,Green,Green Lake,Iowa,Iron,Jackson,Juneau,Jefferson,Kenosha,Kewaunee,Lafayette,La Crosse,Langlade,Lincoln,Manitowoc,Marathon,Marinette,Marquette,Menominee,Milwaukee,Monroe,Oconto,Oneida,Outagamie,Ozaukee,Pepin,Pierce,Polk,Portage,Price,Racine,Richland,Rock,Rusk,Sauk,Sawyer,Shawano,Sheboygan,St. Croix,Taylor,Trempealeau,Vernon,Vilas,Walworth,Washburn,Washington,Waukesha,Waupaca,Waushara,Winnebago,Wood .

Highest PM2.5

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Tuesday, 
County Site Units 24-Hour Hour of Day 1-Hour Hour of Day
Outagamie Appleton µg/m³ 13.6 11 PM 20.3 11 PM
Ashland Bad River Tribal School µg/m³ 21.8 12 AM 16 08 AM
Kenosha Chiwaukee Prairie µg/m³ 26.4 12 AM 25 10 AM
Sauk Devils Lake µg/m³ 30.2 12 AM 19.2 03 AM
Eau Claire Eau Claire DOT Sign Shop µg/m³ 32.3 12 AM 17.1 07 AM
Brown Green Bay East High µg/m³ 14.1 11 PM 21.4 10 PM
Ozaukee Harrington Beach Park µg/m³ 14.9 11 PM 21.7 12 PM
Jackson Ho-Chunk Nation-Black River Falls µg/m³ 29 12 AM 17.6 08 AM
Monroe Ho-Chunk Nation-Tomah µg/m³ 28.3 12 AM 18.7 09 AM
Dodge Horicon Wildlife Area µg/m³ 15.6 11 PM 24.8 09 AM
Marathon Lake Dubay µg/m³ 14 12 AM 15.6 08 AM
Dane Madison East µg/m³ 25.4 12 AM 18.5 08 AM
Dane Madison University Ave. Well #6 µg/m³ 32.7 12 AM 23.3 08 AM
Milwaukee Milwaukee-16th St. Health Center µg/m³ 22.9 12 AM 30.4 09 AM
Milwaukee Milwaukee-College Ave NR µg/m³ 23.8 12 AM 27.9 09 AM
Forest Potawatomi µg/m³ 13.7 11 PM 20.1 11 PM
Grant Potosi µg/m³ 32.6 12 AM 25.1 03 AM
Waukesha Waukesha-Cleveland Ave. µg/m³ 18.3 12 AM 26.3 09 AM