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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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Monday, 
County Site Units 24-Hour Hour of Day 1-Hour Hour of Day
Outagamie Appleton µg/m³ 15 03 PM 26.2 03 AM
Ashland Bad River Tribal School µg/m³ 8.6 11 PM 16.2 12 AM
Kenosha Chiwaukee Prairie µg/m³ 23.6 05 AM 26 03 AM
Sauk Devils Lake µg/m³ 10 12 AM 15.6 07 AM
Eau Claire Eau Claire DOT Sign Shop µg/m³ 12.7 12 AM 15.5 08 AM
Brown Green Bay East High µg/m³ 13.2 09 AM 21.6 06 AM
Ozaukee Harrington Beach Park µg/m³ 19.2 11 PM 29.4 10 PM
Dodge Horicon Wildlife Area µg/m³ 13.9 03 PM 18.6 12 AM
Marathon Lake Dubay µg/m³
Dane Madison East µg/m³ 13 04 PM 22.7 06 AM
Dane Madison University Ave. Well #6 µg/m³ 13.8 05 PM 22.6 06 AM
Milwaukee Milwaukee-16th St. Health Center µg/m³ 30.9 02 PM 37 05 AM
Milwaukee Milwaukee-College Ave NR µg/m³ 22.4 01 PM 37.8 03 AM
Forest Potawatomi µg/m³ 9.3 06 PM 13 02 AM
Grant Potosi µg/m³ 12.7 10 AM 18.1 06 AM
Waukesha Waukesha-Cleveland Ave. µg/m³ 21.9 12 PM 46.7 06 AM