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Noise monitoring program
Active Air Quality Notification
  • An air quality ADVISORY for Unhealthy PM2.5 levels is in effect from 7/24/2025 15:00 to 7/25/2025 23:00 for these counties: Adams,Ashland,Barron,Bayfield,Brown,Buffalo,Burnett,Calumet,Chippewa,Clark,Dodge,Door,Douglas,Dunn,Eau Claire,Florence,Fond du Lac,Forest,Green Lake,Iron,Jackson,Juneau,Kenosha,Kewaunee,La Crosse,Langlade,Lincoln,Manitowoc,Marathon,Marinette,Marquette,Menominee,Milwaukee,Monroe,Oconto,Oneida,Outagamie,Ozaukee,Pepin,Pierce,Polk,Portage,Price,Racine,Rusk,Sawyer,Shawano,Sheboygan,St. Croix,Taylor,Trempealeau,Vernon,Vilas,Washburn,Washington,Waukesha,Waupaca,Waushara,Winnebago,Wood .

Highest PM2.5

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Thursday, 
County Site Units 24-Hour Hour of Day 1-Hour Hour of Day
Outagamie Appleton µg/m³ 12.6 11 PM 27.9 09 PM
Ashland Bad River Tribal School µg/m³ 7.6 05 PM 9.3 12 AM
Kenosha Chiwaukee Prairie µg/m³ 12.1 11 PM 30.9 08 PM
Sauk Devils Lake µg/m³ 9.6 11 PM 15.4 11 PM
Eau Claire Eau Claire DOT Sign Shop µg/m³ 11.1 11 PM 19.6 08 PM
Brown Green Bay East High µg/m³ 10.6 11 PM 33.9 11 PM
Ozaukee Harrington Beach Park µg/m³ 8.6 11 PM 17.2 11 PM
Dodge Horicon Wildlife Area µg/m³ 10.6 11 PM 25.4 11 PM
Marathon Lake Dubay µg/m³
Dane Madison East µg/m³ 14.7 11 PM 43.3 09 PM
Dane Madison University Ave. Well #6 µg/m³ 11.9 11 PM 33 11 PM
Milwaukee Milwaukee-16th St. Health Center µg/m³ 13.4 11 PM 31.1 09 PM
Milwaukee Milwaukee-College Ave NR µg/m³ 11.5 11 PM 24 11 PM
Forest Potawatomi µg/m³ 10.1 11 PM 17.1 08 PM
Grant Potosi µg/m³ 12.9 11 PM 21.7 11 PM
Waukesha Waukesha-Cleveland Ave. µg/m³ 15.1 11 PM 39.2 10 PM