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Noise monitoring program
Active Air Quality Notification
  • An air quality ADVISORY for Unhealthy PM2.5 levels is in effect from 8/4/2025 12:00 to 8/5/2025 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,Juneau,Jefferson,Kenosha,Kewaunee,Lafayette,La Crosse,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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Monday, 
County Site Units 24-Hour Hour of Day 1-Hour Hour of Day
Outagamie Appleton µg/m³ 5.4 12 AM 7.7 10 PM
Ashland Bad River Tribal School µg/m³ 9.7 11 PM 16.4 08 PM
Kenosha Chiwaukee Prairie µg/m³ 5.9 11 PM 7.3 09 PM
Sauk Devils Lake µg/m³ 4 08 PM 4.8 03 AM
Eau Claire Eau Claire DOT Sign Shop µg/m³ 5.7 11 PM 7.9 10 PM
Brown Green Bay East High µg/m³ 8.1 12 AM 9.5 11 PM
Ozaukee Harrington Beach Park µg/m³ 5.4 11 PM 6.7 11 PM
Jackson Ho-Chunk Nation-Black River Falls µg/m³ 6.4 12 AM 7.5 10 PM
Monroe Ho-Chunk Nation-Tomah µg/m³ 5.8 11 PM 7.3 04 PM
Dodge Horicon Wildlife Area µg/m³ 5.5 08 AM 7.5 11 PM
Marathon Lake Dubay µg/m³ 5.1 12 AM 6.6 11 PM
Dane Madison East µg/m³ 4.5 11 PM 5.6 11 PM
Dane Madison University Ave. Well #6 µg/m³ 5.6 11 PM 12.4 08 PM
Milwaukee Milwaukee-16th St. Health Center µg/m³ 7.1 11 PM 9.3 11 PM
Milwaukee Milwaukee-College Ave NR µg/m³ 6.2 11 PM 10.1 07 PM
Forest Potawatomi µg/m³ 8.1 12 AM 8 06 AM
Grant Potosi µg/m³ 5 07 PM 6.3 11 PM
Waukesha Waukesha-Cleveland Ave. µg/m³ 6.5 11 PM 8.6 11 PM