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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 7.2 09 AM 14.4 09 PM
Ashland Bad River Tribal School µg/m³ 7.1 12 AM 6 12 AM
Kenosha Chiwaukee Prairie µg/m³ 7.1 02 AM 7.8 02 AM
Sauk Devils Lake µg/m³ 8.2 10 AM 9.8 08 AM
Eau Claire Eau Claire DOT Sign Shop µg/m³ 9.9 04 AM 10.3 01 AM
Brown Green Bay East High µg/m³ 7.3 10 AM 9.9 08 AM
Ozaukee Harrington Beach Park µg/m³ 5.8 01 AM 6.8 11 AM
Dodge Horicon Wildlife Area µg/m³ 7.1 01 PM 9.4 09 AM
Marathon Lake Dubay µg/m³
Dane Madison East µg/m³ 7.3 11 AM 9.3 12 AM
Dane Madison University Ave. Well #6 µg/m³ 9.2 12 PM 12.9 12 AM
Milwaukee Milwaukee-16th St. Health Center µg/m³ 7.3 12 PM 10.8 11 PM
Milwaukee Milwaukee-College Ave NR µg/m³ 7.1 06 AM 9.1 11 AM
Forest Potawatomi µg/m³ 8.7 05 AM 9.8 12 AM
Grant Potosi µg/m³ 9.6 08 AM 12.5 12 AM
Waukesha Waukesha-Cleveland Ave. µg/m³ 7 01 PM 10.7 11 PM