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Noise monitoring program
Active Air Quality Notification
  • An air quality ADVISORY for Unhealthy PM2.5 levels is in effect from 7/24/2025 15:00 to 7/25/2025 23:00 for these counties: Adams,Ashland,Barron,Bayfield,Brown,Buffalo,Burnett,Calumet,Chippewa,Clark,Dodge,Door,Douglas,Dunn,Eau Claire,Florence,Fond du Lac,Forest,Green Lake,Iron,Jackson,Juneau,Kenosha,Kewaunee,La Crosse,Langlade,Lincoln,Manitowoc,Marathon,Marinette,Marquette,Menominee,Milwaukee,Monroe,Oconto,Oneida,Outagamie,Ozaukee,Pepin,Pierce,Polk,Portage,Price,Racine,Rusk,Sawyer,Shawano,Sheboygan,St. Croix,Taylor,Trempealeau,Vernon,Vilas,Washburn,Washington,Waukesha,Waupaca,Waushara,Winnebago,Wood .

Highest Ozone

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Saturday, 
County Site Units 8-Hour Hour of Day 1-Hour Hour of Day
Outagamie Appleton ppb 42.1 01 AM 38.3 03 AM
Ashland Bad River Tribal School ppb 39 06 PM 42.6 04 PM
Milwaukee Bayside ppb 50.8 12 AM 51.6 02 AM
Rock Beloit-Converse ppb 41 03 AM 41.1 12 AM
Kenosha Chiwaukee Prairie ppb 49.8 12 AM 52.4 12 AM
Columbia Columbus ppb 34.4 12 AM 35.8 01 AM
Sauk Devils Lake ppb 34.7 12 AM 35.8 05 PM
Eau Claire Eau Claire DOT Sign Shop ppb 37.6 08 PM 42.4 03 PM
Walworth Elkhorn ppb 33.4 11 AM 37 10 AM
Fond du Lac Fond Du Lac ppb 41.7 12 AM 37.6 12 AM
Ozaukee Grafton ppb 50.3 12 AM 51.6 03 AM
Brown Green Bay UW ppb 42.9 02 AM 45 12 AM
Ozaukee Harrington Beach Park ppb 55.8 12 AM 54.4 03 AM
Dodge Horicon Wildlife Area ppb 40.1 12 AM 33.9 12 AM
Jefferson Jefferson-Laatsch ppb 29.9 07 AM 34.3 04 AM
Kenosha Kenosha-Water Tower ppb 45.4 12 AM 47.5 01 AM
Kewaunee Kewaunee ppb 50.5 12 AM 55.2 12 AM
La Crosse La Crosse DOT ppb 34.7 06 PM 38.6 03 PM
Marathon Lake Dubay ppb 36.1 12 AM 39.3 12 AM
Dane Madison East ppb 36.4 05 AM 40.2 12 AM
Manitowoc Manitowoc ppb 52.6 04 AM 54.6 12 AM
Milwaukee Milwaukee-16th St. Health Center ppb 43.8 03 AM 46.3 02 AM
Milwaukee Milwaukee-UWM UPark ppb 51 12 AM 52.5 02 AM
Door Newport Park ppb 47.5 06 AM 51.4 03 AM
Forest Potawatomi ppb 45 02 AM 43.3 12 AM
Racine Racine-Payne & Dolan ppb 50.8 12 AM 50.2 01 AM
Sheboygan Sheboygan-Haven ppb 48.6 12 AM 51.2 12 AM
Sheboygan Sheboygan-Kohler Andrae ppb 58.4 12 AM 54.4 03 AM
Vilas Trout Lake ppb 40.1 12 AM 35.4 12 AM
Waukesha Waukesha-Cleveland Ave. ppb 38.3 03 AM 43 02 AM