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Noise monitoring program
Active Air Quality Notification
  • An air quality ADVISORY for Unhealthy PM2.5 levels is in effect from 7/29/2025 08:30 to 7/31/2025 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,Pepin,Pierce,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 10.3 08 PM 12.6 02 AM
Ashland Bad River Tribal School µg/m³ 9 10 AM 10.4 12 AM
Kenosha Chiwaukee Prairie µg/m³ 6.3 09 AM 9.2 07 AM
Sauk Devils Lake µg/m³ 8.5 09 PM 9.5 08 PM
Eau Claire Eau Claire DOT Sign Shop µg/m³ 8.4 04 PM 9.3 04 AM
Brown Green Bay East High µg/m³ 11.2 06 PM 14.3 01 PM
Ozaukee Harrington Beach Park µg/m³ 6.9 02 PM 11.8 10 PM
Dodge Horicon Wildlife Area µg/m³ 8.6 04 PM 9.8 02 PM
Marathon Lake Dubay µg/m³
Dane Madison East µg/m³ 7.7 01 PM 9.6 02 AM
Dane Madison University Ave. Well #6 µg/m³ 10.9 01 PM 13.4 08 AM
Milwaukee Milwaukee-16th St. Health Center µg/m³ 9.2 10 AM 13.1 04 AM
Milwaukee Milwaukee-College Ave NR µg/m³ 8.8 08 AM 12.1 05 AM
Forest Potawatomi µg/m³ 9.8 06 AM 11.3 01 AM
Grant Potosi µg/m³ 7.4 11 PM 9.4 06 AM
Waukesha Waukesha-Cleveland Ave. µg/m³ 9 02 AM 11.9 11 AM