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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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Monday, 
County Site Units 24-Hour Hour of Day 1-Hour Hour of Day
Outagamie Appleton µg/m³ 60.9 12 AM 63.4 01 AM
Ashland Bad River Tribal School µg/m³ 33.9 12 AM 31.5 12 AM
Kenosha Chiwaukee Prairie µg/m³ 45.3 01 AM 61 12 AM
Sauk Devils Lake µg/m³ 34.4 01 AM 47.7 12 AM
Eau Claire Eau Claire DOT Sign Shop µg/m³ 35.7 12 AM 32.9 01 AM
Brown Green Bay East High µg/m³ 61.3 12 AM 63.7 12 AM
Ozaukee Harrington Beach Park µg/m³ 61.4 12 AM 64.3 01 AM
Jackson Ho-Chunk Nation-Black River Falls µg/m³ 42.3 12 AM 43.4 12 AM
Monroe Ho-Chunk Nation-Tomah µg/m³ 40.2 12 AM 38.7 12 AM
Dodge Horicon Wildlife Area µg/m³ 54 12 AM 61.1 12 AM
Marathon Lake Dubay µg/m³
Dane Madison East µg/m³ 39.4 01 AM 56.8 01 AM
Dane Madison University Ave. Well #6 µg/m³ 41.9 01 AM 59.4 01 AM
Milwaukee Milwaukee-16th St. Health Center µg/m³ 67.5 12 AM 67.3 01 AM
Milwaukee Milwaukee-College Ave NR µg/m³ 56.2 01 AM 60.9 12 AM
Forest Potawatomi µg/m³ 50.7 12 AM 57.5 01 AM
Grant Potosi µg/m³ 32.2 01 AM 47.2 01 AM
Waukesha Waukesha-Cleveland Ave. µg/m³ 66.4 12 AM 71.2 12 AM