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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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Thursday, 
County Site Units 24-Hour Hour of Day 1-Hour Hour of Day
Outagamie Appleton µg/m³ 14.1 11 PM 25.7 11 PM
Ashland Bad River Tribal School µg/m³ 11.2 09 PM 14.9 07 AM
Kenosha Chiwaukee Prairie µg/m³ 10.6 11 PM 15.1 03 PM
Sauk Devils Lake µg/m³ 12.3 12 PM 19 11 PM
Eau Claire Eau Claire DOT Sign Shop µg/m³ 12.7 06 PM 16.5 12 AM
Brown Green Bay East High µg/m³ 14.5 11 PM 24.5 11 PM
Ozaukee Harrington Beach Park µg/m³ 9.9 11 PM 17.8 11 PM
Dodge Horicon Wildlife Area µg/m³ 12.3 11 PM 21.8 08 PM
Marathon Lake Dubay µg/m³
Dane Madison East µg/m³ 12 11 PM 20.5 08 PM
Dane Madison University Ave. Well #6 µg/m³ 12.3 12 AM 17.6 11 PM
Milwaukee Milwaukee-16th St. Health Center µg/m³ 14.2 11 PM 22.6 03 PM
Milwaukee Milwaukee-College Ave NR µg/m³ 12.2 11 PM 19.7 03 PM
Forest Potawatomi µg/m³ 10.8 11 PM 13 11 PM
Grant Potosi µg/m³ 14.1 12 AM 14.6 12 AM
Waukesha Waukesha-Cleveland Ave. µg/m³ 14 11 PM 23.1 08 PM