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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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Wednesday, 
County Site Units 24-Hour Hour of Day 1-Hour Hour of Day
Outagamie Appleton µg/m³ 81.9 11 PM 117 04 AM
Ashland Bad River Tribal School µg/m³ 102.9 08 PM 132.2 03 PM
Kenosha Chiwaukee Prairie µg/m³ 15.9 11 PM 42.3 03 PM
Sauk Devils Lake µg/m³ 37.3 11 PM 68.8 11 PM
Eau Claire Eau Claire DOT Sign Shop µg/m³ 61 11 PM 77.8 05 PM
Brown Green Bay East High µg/m³ 89.6 11 PM 118.8 11 PM
Ozaukee Harrington Beach Park µg/m³ 45.4 11 PM 84.8 08 AM
Jackson Ho-Chunk Nation-Black River Falls µg/m³ 69.8 11 PM 105.2 09 AM
Monroe Ho-Chunk Nation-Tomah µg/m³ 67.2 11 PM 114.6 09 AM
Dodge Horicon Wildlife Area µg/m³ 40.8 11 PM 72.9 10 AM
Marathon Lake Dubay µg/m³ 80.1 11 PM 106.5 04 AM
Dane Madison East µg/m³ 28.2 11 PM 62.6 11 PM
Dane Madison University Ave. Well #6 µg/m³ 29.9 11 PM 67.5 11 PM
Milwaukee Milwaukee-16th St. Health Center µg/m³ 32.2 11 PM 71.1 01 PM
Milwaukee Milwaukee-College Ave NR µg/m³ 25.6 11 PM 61.5 12 PM
Forest Potawatomi µg/m³ 100.1 11 PM 122 07 AM
Grant Potosi µg/m³ 16.6 11 PM 56.5 11 PM
Waukesha Waukesha-Cleveland Ave. µg/m³ 29.9 11 PM 66.7 01 PM