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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 8.8 11 PM 22.5 10 PM
Ashland Bad River Tribal School µg/m³ 64 11 PM 106.8 11 PM
Kenosha Chiwaukee Prairie µg/m³ 7.3 10 PM 9.4 01 PM
Sauk Devils Lake µg/m³ 8.3 11 PM 11.4 01 PM
Eau Claire Eau Claire DOT Sign Shop µg/m³ 11.7 11 PM 21.3 11 PM
Brown Green Bay East High µg/m³ 10.3 11 PM 29.2 11 PM
Ozaukee Harrington Beach Park µg/m³ 6.8 11 PM 9.3 10 PM
Jackson Ho-Chunk Nation-Black River Falls µg/m³ 10.2 11 PM 16.8 11 PM
Monroe Ho-Chunk Nation-Tomah µg/m³ 9.2 11 PM 11.9 05 PM
Dodge Horicon Wildlife Area µg/m³ 8.4 11 PM 11.2 10 PM
Marathon Lake Dubay µg/m³ 9.8 11 PM 31 11 PM
Dane Madison East µg/m³ 9.2 11 PM 14.2 09 PM
Dane Madison University Ave. Well #6 µg/m³ 10.6 11 PM 16.3 07 PM
Milwaukee Milwaukee-16th St. Health Center µg/m³ 9.7 11 PM 12.4 08 PM
Milwaukee Milwaukee-College Ave NR µg/m³ 7.9 11 PM 10.2 08 PM
Forest Potawatomi µg/m³ 25.7 11 PM 107.2 11 PM
Grant Potosi µg/m³ 9 11 PM 13.3 11 PM
Waukesha Waukesha-Cleveland Ave. µg/m³ 9.7 11 PM 13.4 03 PM