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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 7.8 06 PM 12.2 04 AM
Ashland Bad River Tribal School µg/m³ 5.6 07 PM 7.2 08 PM
Kenosha Chiwaukee Prairie µg/m³ 17.4 03 PM 28.6 12 PM
Sauk Devils Lake µg/m³ 5.5 10 AM 6.7 05 AM
Eau Claire Eau Claire DOT Sign Shop µg/m³ 6.3 06 PM 7.9 02 AM
Brown Green Bay East High µg/m³ 8.4 12 PM 14.8 05 AM
Ozaukee Harrington Beach Park µg/m³ 13.2 06 PM 21.9 02 AM
Dodge Horicon Wildlife Area µg/m³ 9.5 12 PM 17.6 05 AM
Marathon Lake Dubay µg/m³
Dane Madison East µg/m³ 8 02 AM 11.6 02 AM
Dane Madison University Ave. Well #6 µg/m³ 8.7 04 AM 11.6 01 AM
Milwaukee Milwaukee-16th St. Health Center µg/m³ 16.3 06 AM 21.6 01 AM
Milwaukee Milwaukee-College Ave NR µg/m³ 13 09 AM 22.5 05 AM
Forest Potawatomi µg/m³ 6.1 12 AM 6.3 01 AM
Grant Potosi µg/m³ 7.9 10 PM 12.2 04 AM
Waukesha Waukesha-Cleveland Ave. µg/m³ 14.1 05 AM 22.9 04 AM