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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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Friday, 
County Site Units 24-Hour Hour of Day 1-Hour Hour of Day
Outagamie Appleton µg/m³ 29.4 11 PM 44.1 09 PM
Ashland Bad River Tribal School µg/m³ 49 11 PM 65.1 10 AM
Kenosha Chiwaukee Prairie µg/m³ 12 11 PM 39.7 11 PM
Sauk Devils Lake µg/m³ 10.1 11 PM 37 11 PM
Eau Claire Eau Claire DOT Sign Shop µg/m³ 44.5 11 PM 103.3 01 PM
Brown Green Bay East High µg/m³ 39.3 11 PM 57.5 01 PM
Ozaukee Harrington Beach Park µg/m³ 23.7 11 PM 41.3 06 PM
Jackson Ho-Chunk Nation-Black River Falls µg/m³ 20 11 PM 42.8 10 AM
Monroe Ho-Chunk Nation-Tomah µg/m³ 23.2 11 PM
Dodge Horicon Wildlife Area µg/m³ 17.6 11 PM 36.4 10 PM
Marathon Lake Dubay µg/m³ 17 11 PM 30.1 11 PM
Dane Madison East µg/m³ 10.6 11 PM 38 10 PM
Dane Madison University Ave. Well #6 µg/m³ 14.2 11 PM 49.4 11 PM
Milwaukee Milwaukee-16th St. Health Center µg/m³ 22.6 11 PM 52.4 09 PM
Milwaukee Milwaukee-College Ave NR µg/m³ 19.4 11 PM 49.8 08 PM
Forest Potawatomi µg/m³ 55.2 11 PM 67.7 07 PM
Grant Potosi µg/m³ 4.4 09 PM 5.9 01 PM
Waukesha Waukesha-Cleveland Ave. µg/m³ 20 11 PM 47.9 10 PM