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Noise monitoring program
Active Air Quality Notification
  • An air quality ADVISORY for Unhealthy PM2.5 levels is in effect from 8/1/2025 12:00 to 8/2/2025 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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Monday, 
County Site Units 24-Hour Hour of Day 1-Hour Hour of Day
Outagamie Appleton µg/m³ 5 12 AM 6.3 11 PM
Ashland Bad River Tribal School µg/m³ 4.5 11 PM 8.4 09 PM
Kenosha Chiwaukee Prairie µg/m³ 6.9 01 AM 9.2 12 AM
Sauk Devils Lake µg/m³ 4.5 10 PM 9.5 02 PM
Eau Claire Eau Claire DOT Sign Shop µg/m³ 4.6 11 PM 6.4 10 PM
Brown Green Bay East High µg/m³ 5.9 12 AM 5.5 01 PM
Ozaukee Harrington Beach Park µg/m³ 5.4 12 AM 5.8 11 PM
Dodge Horicon Wildlife Area µg/m³ 4.6 12 AM 5.7 11 PM
Marathon Lake Dubay µg/m³
Dane Madison East µg/m³ 5.1 11 PM 9 11 PM
Dane Madison University Ave. Well #6 µg/m³ 4.9 12 AM 7.3 11 PM
Milwaukee Milwaukee-16th St. Health Center µg/m³ 6.7 12 AM 15.4 09 PM
Milwaukee Milwaukee-College Ave NR µg/m³ 6.1 12 AM 9.5 10 PM
Forest Potawatomi µg/m³ 3.9 10 PM 5 11 PM
Grant Potosi µg/m³ 4.8 12 AM 7.8 11 PM
Waukesha Waukesha-Cleveland Ave. µg/m³ 5.7 12 AM 11 08 PM