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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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Saturday, 
County Site Units 24-Hour Hour of Day 1-Hour Hour of Day
Outagamie Appleton µg/m³ 57.6 11 PM 70.3 11 PM
Ashland Bad River Tribal School µg/m³ 70.9 12 AM 73.4 12 PM
Kenosha Chiwaukee Prairie µg/m³ 37 12 AM 40 08 AM
Sauk Devils Lake µg/m³ 38.8 11 PM 56.3 01 PM
Eau Claire Eau Claire DOT Sign Shop µg/m³ 70.5 12 AM 58.1 12 AM
Brown Green Bay East High µg/m³ 58.5 11 PM 74.4 06 PM
Ozaukee Harrington Beach Park µg/m³ 45.9 11 PM 60.1 11 PM
Jackson Ho-Chunk Nation-Black River Falls µg/m³ 53 12 AM 51.7 12 PM
Monroe Ho-Chunk Nation-Tomah µg/m³ 44.7 11 PM 59.9 08 PM
Dodge Horicon Wildlife Area µg/m³ 43.6 11 PM 61.2 11 PM
Marathon Lake Dubay µg/m³ 47 12 AM
Dane Madison East µg/m³ 35.6 12 AM 40.6 11 PM
Dane Madison University Ave. Well #6 µg/m³ 35.7 09 AM 40.8 08 PM
Milwaukee Milwaukee-16th St. Health Center µg/m³ 51.8 11 PM 72.5 11 PM
Milwaukee Milwaukee-College Ave NR µg/m³ 43.2 05 PM 54.6 04 PM
Forest Potawatomi µg/m³ 74.6 09 AM 74.3 11 AM
Grant Potosi µg/m³ 43.6 12 AM 41.6 11 PM
Waukesha Waukesha-Cleveland Ave. µg/m³ 56.6 11 PM 79.4 02 PM