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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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Friday, 
County Site Units 24-Hour Hour of Day 1-Hour Hour of Day
Outagamie Appleton µg/m³ 23.7 08 PM 27.7 11 AM
Ashland Bad River Tribal School µg/m³ 11.3 11 PM 17.4 12 PM
Kenosha Chiwaukee Prairie µg/m³ 20.4 07 PM 26.4 01 AM
Sauk Devils Lake µg/m³ 16.5 02 PM 23.4 08 AM
Eau Claire Eau Claire DOT Sign Shop µg/m³ 20.5 10 PM 27.3 03 PM
Brown Green Bay East High µg/m³ 23.4 10 PM 35.8 12 AM
Ozaukee Harrington Beach Park µg/m³ 17.5 04 PM 25.8 07 AM
Dodge Horicon Wildlife Area µg/m³ 21.2 07 PM 25.4 01 AM
Marathon Lake Dubay µg/m³
Dane Madison East µg/m³ 24.3 05 PM 27.9 12 AM
Dane Madison University Ave. Well #6 µg/m³ 25.3 09 PM 38.5 07 PM
Milwaukee Milwaukee-16th St. Health Center µg/m³ 27 11 PM 37.3 08 PM
Milwaukee Milwaukee-College Ave NR µg/m³ 22.4 11 PM 31.5 08 PM
Forest Potawatomi µg/m³ 17.6 06 PM 24.2 08 AM
Grant Potosi µg/m³ 18.9 05 PM 21.2 12 AM
Waukesha Waukesha-Cleveland Ave. µg/m³ 26.6 03 PM 36.8 12 AM