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Noise monitoring program
Active Air Quality Notification
  • An air quality ADVISORY for Unhealthy PM2.5 levels is in effect from 8/2/2025 12:00 to 8/3/2025 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,Iowa,Green Lake,Iron,Jackson,Jefferson,Juneau,Kenosha,Kewaunee,La Crosse,Langlade,Lafayette,Lincoln,Manitowoc,Marathon,Marinette,Marquette,Menominee,Milwaukee,Monroe,Oconto,Oneida,Outagamie,Ozaukee,Pepin,Pierce,Polk,Portage,Price,Racine,Richland,Rock,Rusk,Sawyer,Sauk,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 5.3 12 AM 4.7 12 AM
Ashland Bad River Tribal School µg/m³ 4.9 12 AM 5.5 09 PM
Kenosha Chiwaukee Prairie µg/m³ 5.2 12 AM 6.3 11 PM
Sauk Devils Lake µg/m³ 5.7 12 AM 6 11 PM
Eau Claire Eau Claire DOT Sign Shop µg/m³ 6.7 11 PM 9.8 10 PM
Brown Green Bay East High µg/m³ 5 12 AM 5.8 05 AM
Ozaukee Harrington Beach Park µg/m³ 4.4 12 AM 5.3 09 PM
Dodge Horicon Wildlife Area µg/m³ 4.8 12 AM 4.4 11 PM
Marathon Lake Dubay µg/m³
Dane Madison East µg/m³ 5.5 12 AM 7.8 07 PM
Dane Madison University Ave. Well #6 µg/m³ 23 12 PM 278.9 12 AM
Milwaukee Milwaukee-16th St. Health Center µg/m³ 6 12 AM 6.9 10 PM
Milwaukee Milwaukee-College Ave NR µg/m³ 5.6 12 AM 6.7 11 PM
Forest Potawatomi µg/m³ 3.8 12 AM 5.3 12 PM
Grant Potosi µg/m³ 6.9 12 AM 6.5 12 AM
Waukesha Waukesha-Cleveland Ave. µg/m³ 5.6 12 AM 6.1 02 PM