-
Noise monitoring program
Active Air Quality Notification
  • An air quality ADVISORY for Unhealthy PM2.5 levels is in effect from 8/2/2025 12:00 to 8/3/2025 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,Iowa,Green Lake,Iron,Jackson,Jefferson,Juneau,Kenosha,Kewaunee,La Crosse,Langlade,Lafayette,Lincoln,Manitowoc,Marathon,Marinette,Marquette,Menominee,Milwaukee,Monroe,Oconto,Oneida,Outagamie,Ozaukee,Pepin,Pierce,Polk,Portage,Price,Racine,Richland,Rock,Rusk,Sawyer,Sauk,Shawano,Sheboygan,St. Croix,Taylor,Trempealeau,Vernon,Vilas,Walworth,Washburn,Washington,Waukesha,Waupaca,Waushara,Winnebago,Wood .

8-HR Ozone Summary

Filter by County:
Filter by Site:
Wednesday, 
County Site Units 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23
Ashland Bad River Tribal School ppb 15.3 15.7 16 16.2 16.7 16.6 16.7 17 18 19.4 20.8 22.1 23.4 25.6 27.5 28.8 29 28.5 27 24.9 22.5 19.8 16.8 14.2
Brown Green Bay UW ppb 26.5 24.6 22.9 21.4 20 18.8 18 17.9 17.8 18.4 19.3 20.4 21.7 23 23.3 23.3 23.5 23 21.8 20.3 18.4 17.5 16.2
Columbia Columbus ppb 31 28.7 26.3 23.9 21.6 19.5 17.5 16.3 15.5 15.1 15 15.1 15.7 16.3 17.2 17.8 18.3 18.7 18.7 18.7 18.6 18.2 17.4 16.6
Dane Madison East ppb 32.1 30.4 28.2 25.9 23.6 21.2 18.9 17.2 16.1 15.5 15 15.2 15.6 16.5 18 19.1 19.9 20.5 20.1 19 17.3 14.8 12 9.1
Dodge Horicon Wildlife Area ppb 35.6 33.2 30.3 27 24.2 21.6 19.3 18 16.7 16.2 16.2 16.5 16.9 17.4 17.9 18 18.2 18.1 17.7 17.1 16.4 15.3 14.3 12.8
Door Newport Park ppb 23 22.1 21.5 21 21 21.2 21.1 21 21.1 21.1 21.6 22.3 23.2 24.5 26.2 27.4 28.9 29.8 29.6 28.6 26.6 25.2 23.3 21.4
Eau Claire Eau Claire DOT Sign Shop ppb 21.6 19.7 18.3 17.1 16.4 15.6 15.1 14.9 15.7 16.8 18.3 20.3 22.3 24.7 25.5 27.3 28.7 29.5 28.7 26 22.6 19.1 15.3 11.4
Fond du Lac Fond Du Lac ppb 32.7 30.3 27.6 24.5 21.6 19 16.6 14.4 13 12.4 12.2 12.6 13.2 14.2 15.1 16.3 17.1 17.2 16.7 15.9 14.9 13.7 12.7 11.3
Forest Potawatomi ppb 19.6 18.3 17 16 15.5 15.4 15.5 15.8 16.4 17.6 19.1 20.8 22.7 24.3 25.6 26.7 27.2 26.4 25.1 24 22.6 21.3 19.4 17.5
Jefferson Jefferson-Laatsch ppb 31.1 29.4 27.4 25.3 22.7 20.4 18.4 16.6 15.4 14.7 14.6 14.5 15.4 16.4 17.2 18 18.7 18.8 18.5 17.7 16.8 16.1 15.1 13.3
Kenosha Chiwaukee Prairie ppb 30 28.9 27.9 26.4 24.7 22.6 20.8 19.4 18.1 17.5 17.1 17.3 18.1 19.4 21.1 22.8 24.3 25.1 25.7 26 25.8 24.9 22.5 19.6
Kenosha Kenosha-Water Tower ppb 27.2 25.9 24.8 23.6 22.1 19.9 18 16.9 15.6 14.8 14.6 14.9 16 17.8 19.6 21.3 22.9 24.5 25.2 25.5 25.3 24.3 23 21.3
Kewaunee Kewaunee ppb 25.6 24.3 22.9 21.3 19.8 18.5 17.6 17.7 17.9 18.1 18.5 19.1 20 21 22 22.8 23.4 23.8 23.8 23 22.2 21.1 19.7 18
La Crosse La Crosse DOT ppb 29.1 27.4 25.7 23.8 22.2 20 18.7 17.7 17 16.1 16.2 17.1 18.7 20.8 22.8 24.8 26.5 28.4 28.6 27.8 26.3 24.3 21.9 18.8
Manitowoc Manitowoc ppb 25.6 23.5 21.8 19.7 18.3 16.9 15.7 15.1 15.1 15.4 16.1 17.1 17.8 18.8 19.9 20.9 21.4 21.9 21.5 20.9 19.5 17.7 15.4 13
Marathon Lake Dubay ppb 24.5 22 19.8 17.8 16.1 15 14.2 14.7 15.3 16.2 16.9 17.8 18.9 19.7 20 20.1 20.3 20.3 19.7 18.9 17.7 16.6 15.4 14.4
Milwaukee Bayside ppb 34.7 33.4 31.3 29 26.4 23.8 21.2 19.3 18.1 17.4 17.3 17.6 18.4 19.8 21.4 22.7 23.4 24 24.2 23.8 22.6 20.8 18.7 16
Milwaukee Milwaukee-16th St. Health Center ppb 31.5 30.9 29.9 28 25.8 23 20.2 18 16.4 15.3 14.9 15 15.7 17.1 18.7 19.8 20.6 20.8 20.9 20.8 20.5 19.7 18.9 17.6
Outagamie Appleton ppb 27.7 25.4 23.5 21.5 19.1 16.5 14.4 13.2 12.6 12.6 12.9 13.6 14.5 15.8 17 17.7 18 18.1 17.1 15 13.1 11.4 9.7 7.9
Ozaukee Grafton ppb 33.2 31.8 29.9 27.5 25.2 22 19.5 18.1 17.2 16.7 16.5 17 17.8 19.7 21.1 22 22.7 23.1 23.6 23.9 23.2 21.3 18.9 16.3
Ozaukee Harrington Beach Park ppb 32.1 30.4 28 25.4 22.8 20.4 18.4 17.1 16.2 15.6 15.7 16.4 17.2 18.1 19.2 20.1 20.9 21.6 21.9 21.7 21.1 20.4 19.3 17.9
Racine Racine-Payne & Dolan ppb 31.8 31.1 30.3 28.7 26.4 23.9 21 18.9 17.7 16.7 16.4 16.6 17.4 18.7 20.8 22.2 23.2 23.9 24.2 24.1 23.6 22.9 21.5 20.1
Rock Beloit-Converse ppb 27 26.1 25.7 24.3 22.3 20.7 18.8 17.3 16.1 15.4 14.7 14.9 16.1 17.2 18.6 19.8 20.9 21.4 21.7 21.5 21.1 19.9 17.7 15
Sauk Devils Lake ppb 31.9 29.5 26.9 24.4 21.9 19.3 17.4 16.1 15.4 15 14.9 15.2 16.1 17.2 18.5 19.5 20.2 20.5 19.9 18.5 16.8 15 12.8 10.9
Sheboygan Sheboygan-Haven ppb 30.6 28.4 25.9 23.4 21.1 19.1 17.5 16.4 15.8 15.6 15.8 16.4 17.1 17.8 18.6 19.3 19.9 20.3 20.2 19.6 19.1 18 16.4 14.6
Sheboygan Sheboygan-Kohler Andrae ppb 28.8 26.4 24 22.3 20.2 18.2 17.7 17.4 17.1 16.8 17 17.4 18.5 19.1 18.6 20.1 21.5 23 22.6 23.3 23.6 22.9 21.4 19.2
Vilas Trout Lake ppb 17.4 16.7 16.5 16.7 16.7 17 17.3 17.9 18.7 20 21.2 22.4 23.8 25.1 26.4 27.2 27.5 27.2 25.9 23.5 20.9 18.3 15.7 13
Walworth Elkhorn ppb 29.5 28.4 26.8 25.2 23.2 20.8 18.7 17 15.8 14.9 14.7 14.9 15.5 16.5 17.5 18.5 19.2 19.5 19.3 18.7 17.9 17 15.8 14.5
Waukesha Waukesha-Cleveland Ave. ppb 29.4 28.7 27.9 26.3 24.3 22 19.8 17.9 16.5 15.4 14.9 14.8 15.1 16 16.9 17.8 17.8 17.7 17.5 17 16.5 16.2 15.7 14.4