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Noise monitoring program
Active Air Quality Notification
  • An air quality ADVISORY for Unhealthy for Sensitive Groups PM2.5 levels is in effect from 8/5/2025 12:00 to 8/6/2025 12:00 for these counties: Ashland,Bayfield,Brown,Calumet,Dodge,Door,Douglas,Florence,Fond du Lac,Forest,Green Lake,Iron,Kenosha,Kewaunee,Langlade,Lincoln,Manitowoc,Marathon,Marinette,Marquette,Menominee,Milwaukee,Oconto,Oneida,Outagamie,Ozaukee,Portage,Racine,Shawano,Sheboygan,Vilas,Washington,Waukesha,Waupaca,Waushara,Winnebago .

Highest PM2.5

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Sunday, 
County Site Units 24-Hour Hour of Day 1-Hour Hour of Day
Outagamie Appleton µg/m³ 26 11 PM 54.6 08 PM
Ashland Bad River Tribal School µg/m³ 18.6 11 PM 28 01 PM
Kenosha Chiwaukee Prairie µg/m³ 11.3 11 PM 56.6 11 PM
Sauk Devils Lake µg/m³ 10.6 11 PM 55.2 11 PM
Eau Claire Eau Claire DOT Sign Shop µg/m³ 13.4 11 PM 24.7 11 PM
Brown Green Bay East High µg/m³ 19.8 11 PM 52.7 08 PM
Ozaukee Harrington Beach Park µg/m³ 9.5 11 PM 25.5 11 PM
Jackson Ho-Chunk Nation-Black River Falls µg/m³ 12.8 11 PM 23.5 10 PM
Monroe Ho-Chunk Nation-Tomah µg/m³ 13.1 11 PM 21.6 11 PM
Dodge Horicon Wildlife Area µg/m³ 18.5 11 PM 52 09 PM
Marathon Lake Dubay µg/m³ 17.4 11 PM 29.8 10 PM
Dane Madison East µg/m³ 8.3 11 PM 30.8 11 PM
Dane Madison University Ave. Well #6 µg/m³ 12.1 11 PM 48.6 11 PM
Milwaukee Milwaukee-16th St. Health Center µg/m³ 17.5 11 PM 55.9 11 PM
Milwaukee Milwaukee-College Ave NR µg/m³ 11.6 11 PM 37.4 07 PM
Forest Potawatomi µg/m³ 33.8 11 PM 60.3 12 PM
Grant Potosi µg/m³ 5.4 11 PM 7.2 11 PM
Waukesha Waukesha-Cleveland Ave. µg/m³ 15.7 11 PM 47.4 08 PM