-
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

Filter by County:
Filter by Site:
Sunday, 
County Site Units 24-Hour Hour of Day 1-Hour Hour of Day
Outagamie Appleton µg/m³ 20.9 12 AM 6.7 03 AM
Ashland Bad River Tribal School µg/m³ 13.5 12 AM 6.9 01 AM
Kenosha Chiwaukee Prairie µg/m³ 15.1 12 AM 4.8 01 AM
Sauk Devils Lake µg/m³ 13.9 12 AM 4.4 02 PM
Eau Claire Eau Claire DOT Sign Shop µg/m³ 8.7 12 AM 6.4 10 PM
Brown Green Bay East High µg/m³ 24.1 12 AM 9.4 12 AM
Ozaukee Harrington Beach Park µg/m³ 16.2 12 AM 5.7 12 AM
Jackson Ho-Chunk Nation-Black River Falls µg/m³ 14.8 12 AM 11 05 AM
Monroe Ho-Chunk Nation-Tomah µg/m³ 15.8 12 AM 6.4 12 AM
Dodge Horicon Wildlife Area µg/m³ 13.9 12 AM 6.2 02 PM
Marathon Lake Dubay µg/m³ 18.9 12 AM 7.3 12 AM
Dane Madison East µg/m³ 14.2 12 AM 4.5 10 AM
Dane Madison University Ave. Well #6 µg/m³ 17.6 12 AM 9.2 08 PM
Milwaukee Milwaukee-16th St. Health Center µg/m³ 18.9 12 AM 6.4 02 PM
Milwaukee Milwaukee-College Ave NR µg/m³ 15.9 12 AM 5.2 10 AM
Forest Potawatomi µg/m³ 31.7 12 AM 10.2 12 AM
Grant Potosi µg/m³ 4.5 12 AM 6.8 11 PM
Waukesha Waukesha-Cleveland Ave. µg/m³ 17 12 AM 6.5 01 PM