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Noise monitoring program
Active Air Quality Notification
  • An air quality ADVISORY for Unhealthy PM2.5 levels is in effect from 8/3/2025 12:00 to 8/4/2025 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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Sunday, 
County Site Units 24-Hour Hour of Day 1-Hour Hour of Day
Outagamie Appleton µg/m³ 63.3 08 AM 65.6 12 AM
Ashland Bad River Tribal School µg/m³ 55.6 12 AM 37.7 08 PM
Kenosha Chiwaukee Prairie µg/m³ 42.9 11 PM 59.2 10 PM
Sauk Devils Lake µg/m³ 39.7 05 AM 43.7 11 PM
Eau Claire Eau Claire DOT Sign Shop µg/m³ 48.1 12 AM 50.2 01 AM
Brown Green Bay East High µg/m³ 62.7 08 AM 66.4 07 PM
Ozaukee Harrington Beach Park µg/m³ 61.4 11 PM 69.3 02 AM
Jackson Ho-Chunk Nation-Black River Falls µg/m³ 47 06 AM 57.5 03 AM
Monroe Ho-Chunk Nation-Tomah µg/m³ 47.7 08 AM 48.5 12 AM
Dodge Horicon Wildlife Area µg/m³ 54.1 10 PM 63.3 12 AM
Marathon Lake Dubay µg/m³
Dane Madison East µg/m³ 37.9 11 PM 55.9 11 PM
Dane Madison University Ave. Well #6 µg/m³ 39.9 11 PM 60.4 08 PM
Milwaukee Milwaukee-16th St. Health Center µg/m³ 68.5 08 PM 74.4 12 AM
Milwaukee Milwaukee-College Ave NR µg/m³ 54.2 11 PM 67.8 01 PM
Forest Potawatomi µg/m³ 67.9 12 AM 62.8 12 AM
Grant Potosi µg/m³ 35 12 AM 37.8 12 PM
Waukesha Waukesha-Cleveland Ave. µg/m³ 68.2 12 PM 76 09 PM