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Noise monitoring program
Active Air Quality Notification
  • An air quality ADVISORY for Unhealthy PM2.5 levels is in effect from 8/3/2025 12:00 to 8/4/2025 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,Jefferson,Juneau,Kenosha,Kewaunee,La Crosse,Lafayette,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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Thursday, 
County Site Units 24-Hour Hour of Day 1-Hour Hour of Day
Outagamie Appleton µg/m³ 100.5 11 AM 144.7 05 AM
Ashland Bad River Tribal School µg/m³ 101.6 12 AM 135.4 11 AM
Kenosha Chiwaukee Prairie µg/m³ 77.8 11 PM 113 08 AM
Sauk Devils Lake µg/m³ 78.9 05 PM 120 08 AM
Eau Claire Eau Claire DOT Sign Shop µg/m³ 87.6 11 PM 123.1 09 AM
Brown Green Bay East High µg/m³ 103.1 10 AM 137.7 06 AM
Ozaukee Harrington Beach Park µg/m³ 84.4 02 PM 132.1 07 AM
Jackson Ho-Chunk Nation-Black River Falls µg/m³ 87.3 12 PM 138.4 08 AM
Monroe Ho-Chunk Nation-Tomah µg/m³ 85.3 08 AM 122.8 08 AM
Dodge Horicon Wildlife Area µg/m³ 86.5 05 PM 127.3 07 AM
Marathon Lake Dubay µg/m³ 94.5 09 AM 127.8 06 AM
Dane Madison East µg/m³ 81.1 09 PM 113.2 08 AM
Dane Madison University Ave. Well #6 µg/m³ 83.9 08 PM 123.8 08 AM
Milwaukee Milwaukee-16th St. Health Center µg/m³ 91.9 09 PM 135.7 09 AM
Milwaukee Milwaukee-College Ave NR µg/m³ 84 09 PM 124 09 AM
Forest Potawatomi µg/m³ 108.3 06 AM 158.1 04 AM
Grant Potosi µg/m³ 77.7 11 PM 113.9 08 AM
Waukesha Waukesha-Cleveland Ave. µg/m³ 86.2 09 PM 128 09 AM