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Noise monitoring program
Active Air Quality Notification
  • An air quality ADVISORY for Unhealthy PM2.5 levels is in effect from 7/12/2025 00:00 to 7/14/2025 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,Pierce,Pepin,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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Wednesday, 
County Site Units 24-Hour Hour of Day 1-Hour Hour of Day
Outagamie Appleton µg/m³ 11 11 PM 20.7 08 PM
Ashland Bad River Tribal School µg/m³ 9.4 02 PM 10.7 01 PM
Kenosha Chiwaukee Prairie µg/m³ 9.3 11 PM 16.2 07 PM
Sauk Devils Lake µg/m³ 9.2 11 PM 14.1 10 PM
Eau Claire Eau Claire DOT Sign Shop µg/m³ 11.5 10 PM 13.6 08 PM
Brown Green Bay East High µg/m³ 11 11 PM 27.6 08 PM
Ozaukee Harrington Beach Park µg/m³ 7.6 11 PM 13.7 11 PM
Dodge Horicon Wildlife Area µg/m³ 8.7 11 PM 15.1 11 PM
Marathon Lake Dubay µg/m³
Dane Madison East µg/m³ 9.6 11 PM 21.1 09 PM
Dane Madison University Ave. Well #6 µg/m³ 9.4 11 PM 19.1 10 PM
Milwaukee Milwaukee-16th St. Health Center µg/m³ 9.9 11 PM 17.5 11 PM
Milwaukee Milwaukee-College Ave NR µg/m³ 9.2 11 PM 14.1 08 PM
Forest Potawatomi µg/m³ 9.7 10 PM 14.6 08 PM
Grant Potosi µg/m³ 11.3 11 PM 22.9 03 PM
Waukesha Waukesha-Cleveland Ave. µg/m³ 11.1 11 PM 23.6 09 PM