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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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Friday, 
County Site Units 24-Hour Hour of Day 1-Hour Hour of Day
Outagamie Appleton µg/m³ 82.2 12 AM 62.8 08 PM
Ashland Bad River Tribal School µg/m³ 96.8 06 AM 93.3 12 AM
Kenosha Chiwaukee Prairie µg/m³ 78 12 AM 49 02 AM
Sauk Devils Lake µg/m³ 77.2 12 AM 55.5 12 AM
Eau Claire Eau Claire DOT Sign Shop µg/m³ 91.5 06 AM 87.4 02 AM
Brown Green Bay East High µg/m³ 78.5 12 AM 66 08 PM
Ozaukee Harrington Beach Park µg/m³ 75.7 12 AM 40.4 08 PM
Jackson Ho-Chunk Nation-Black River Falls µg/m³ 85.5 01 AM 74.6 12 AM
Monroe Ho-Chunk Nation-Tomah µg/m³ 73.8 12 AM 48.7 06 AM
Dodge Horicon Wildlife Area µg/m³ 82.9 12 AM 36.7 02 PM
Marathon Lake Dubay µg/m³ 73.8 12 AM 53.7 01 PM
Dane Madison East µg/m³ 80.5 12 AM 55.4 12 AM
Dane Madison University Ave. Well #6 µg/m³ 81.9 12 AM 45.8 10 AM
Milwaukee Milwaukee-16th St. Health Center µg/m³ 87.8 12 AM 51.9 10 PM
Milwaukee Milwaukee-College Ave NR µg/m³ 80.6 12 AM 51.5 10 PM
Forest Potawatomi µg/m³ 83.3 12 AM 97.3 10 AM
Grant Potosi µg/m³ 77.5 12 AM 61.9 02 AM
Waukesha Waukesha-Cleveland Ave. µg/m³ 83.9 12 AM 48.9 09 PM