-
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 .

8-HR Ozone Summary

Filter by County:
Filter by Site:
Saturday, 
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 17.4 14.9 13.6 12.8 12.2 11.7 11.2 10.8 11.1 11.9 13.5 16.2 19.5 23.1 26.3 28.3 29.9 30.8 30.4 28.1 24.5 21.3 19.5 18.7
Brown Green Bay UW ppb 26 25.3 24.6 22.9 20.5 18 16.1 15.2 16 17.6 19.8 22.5 25.4 28.3 31.2 33.2 33.3 31.6 29.9 27.8 25.6 23.6 21.5 20
Columbia Columbus ppb 33.3 32.7 31.9 31 29.7 28.3 26.6 25.4 25.6 26.5 27.7 29.2 30.7 32.2 33.9 35 34.9 34.3 33.3 31.5 29.9 28.3 27.1 26.2
Dane Madison East ppb 14.6 10 6.3 4 2.6 1.7 1.9 4.7 8.6 12.8 16.9 21 25.2 29.4 32.9 33.4 33.3 32.9 32.1 31.1 29.7 28.2 27.1 26.4
Dodge Horicon Wildlife Area ppb 27.9 24.5 22 19.6 16.6 14.8 13.2 12.7 15 18.3 21.4 24.3 27.7 30.6 33.5 35.3 35.1 34.7 34.3 33.3 31.9 30.6 29.5 28.2
Door Newport Park ppb 23.8 22.9 21.3 20.6 20.1 19.6 18.7 18.3 18.3 19.3 21.3 23.9 27.2 30.7 34.5 37 38.5 38.6 37.1 34.4 30.8 27.4 25 22.2
Eau Claire Eau Claire DOT Sign Shop ppb 9.2 5.5 2.4 1 0.6 0.6 0.6 0.9 2.9 6.2 10.1 14.2 18.3 22.5 26.7 30.6 32.7 33.2 32.7 30.9 28.7 25.8 22.6 19.6
Fond du Lac Fond Du Lac ppb 31.3 29 28 27.6 26.5 24.4 23.5 23.9 24.5 25.7 26.1 26.7 28.3 30.9 31.8 31 30.7 30.3 29.3 28.5 27.8 26.8 26 25.4
Forest Potawatomi ppb 26.4 25.8 26.3 26.5 25.6 25.2 24.3 24.3 24.8 25 25.6 26.4 27.7 28.6 29.9 30.4 30.7 31.1 30.8 30.4 30.1 29.4 28.5 27.5
Jefferson Jefferson-Laatsch ppb 12.8 8.7 5.9 3.8 2.8 2.3 1.8 3.5 6.9 10.8 14.8 19.2 23.7 28.1 32.2 34.4 35 35 34.7 33.7 32.1 30.5 28.8 27.4
Kenosha Chiwaukee Prairie ppb 19.9 14.6 14.7 16.7 19.2 22.1 25.1 28.2 31.2 34.2 34.5 34.5 34.5 34.8 35.5 36.1 36.7 37.2 37.7 38 38.2 38.3 37.9 37.5
Kenosha Kenosha-Water Tower ppb 31.6 28.1 24.3 21 21 22.7 24.3 25.6 26.8 28.3 30.5 33.2 33.7 34.2 35 35.5 36 36.4 36.7 36.8 36.5 35.7 34.7 33.8
Kewaunee Kewaunee ppb 33.7 32.7 32.1 31.1 29.3 27.2 25.9 24.5 23.8 24.3 25.8 28.1 30.6 32.8 34.4 36 36.7 35.9 32.9 30.6 28.5 27.6 27.2 27.1
La Crosse La Crosse DOT ppb 19.5 17 15.2 13.7 11.4 10.1 8.3 7.5 7.3 6.5 7 8.8 12.2 15.5 19.5 23.3 26.8 30.1 31.9 31.6 30.4 27.7 25.5 23.4
Manitowoc Manitowoc ppb 19.7 19.7 17.3 11.9 8.3 6.1 5 5.5 8.6 8.6 14.2 18.8 23.2 27.5 31.5 34.2 33.9 32.2 28.7 26.4 25.2 22.1 19 15.9
Marathon Lake Dubay ppb 28.7 26.2 22.9 19.5 16.2 12.9 10.6 10.2 10.8 12.8 16.3 20.3 24.5 28.5 31.9 34.2 35.7 35.4 34 33.1 31.6 30.5 29.5 28.1
Milwaukee Bayside ppb 22.4 17.5 13.1 9.2 6.2 4.3 3.4 5.4 9 13.1 17.4 21.7 25.9 30.2 34.3 36 36.8 37.2 37 36.7 36.5 36 35 34.1
Milwaukee Milwaukee-16th St. Health Center ppb 24.5 19.2 14.2 10.3 7.2 4 1.6 3.8 7.7 11.7 15.7 19.6 23.5 27.6 31.7 33.5 33.7 33.3 33 33.2 33 32.2 31 29.7
Outagamie Appleton ppb 15.9 12.4 10.3 8.9 7.8 6.3 5.5 5.1 8.2 12.2 15.6 19.4 23.3 27.6 31.5 34.8 34.6 33.8 32.6 30.3 28 25.2 22.5 19.5
Ozaukee Grafton ppb 19.5 16 11.5 8.6 9.1 9.2 8.7 10.9 13.7 16.4 19.9 23.6 27.3 31.5 36.1 37.9 38.3 38.3 37.9 36.8 36 35 33.3 31
Ozaukee Harrington Beach Park ppb 31.3 28.5 26.4 23.5 20.8 21.2 20.2 20.7 21.6 23.7 25.3 27.2 29 30.4 33.2 35 35.4 34.8 33.9 33.2 32.6 31.9 31.1 28.9
Racine Racine-Payne & Dolan ppb 29 23.7 18.8 15.7 16.3 17.1 19.2 21.9 25.1 28.4 31.7 34.3 34.5 34.7 35.1 35.5 35.8 36.1 36.5 36.9 37.2 37.1 36.8 36.2
Rock Beloit-Converse ppb 13.6 8.9 7.3 7.6 7.9 7.7 8.7 11.4 15.2 19.3 22.5 26 29.6 33.6 36.7 38.5 39.5 39.8 39.3 38.3 36.8 35 33 30.2
Sauk Devils Lake ppb 17.8 16.7 16.5 16.3 15.9 15.7 16.1 18.2 20.4 22.2 24.4 26.5 28.5 30.5 31.5 30.2 28.3 26.5 25.8 25.4 25.3 25.5 26.6 27.8
Sheboygan Sheboygan-Haven ppb 28.7 26.5 23.9 21.8 20.1 18.4 16.6 16.2 17.2 19 21.2 23.3 25.5 28 30.7 32.1 32.4 31.5 30.8 29.7 28.8 28 27.4 25.9
Sheboygan Sheboygan-Kohler Andrae ppb 29.2 25.6 21.5 18.8 17.2 16.4 14.8 14.9 17.2 20.4 24 27.1 30.1 32.6 36.1 37.7 37.5 36.1 35.2 34.7 34 33.4 32.7 31.2
Vilas Trout Lake ppb 13.7 10.2 7.7 6.2 5.4 4.6 4.2 4.1 5.6 8 10.6 13.7 17.2 20.8 24.7 28.5 30.5 32 33.1 32.7 31.5 30 28.3 26.3
Walworth Elkhorn ppb 25.8 25.5 25.9 26.9 27.7 29.3 30 30.8 31.1 31.1 30.8 30.6 31.2 31.9 33.3 34.5 35.4 35.4 35.1 34 32.6 30.7 28.6 26.7
Waukesha Waukesha-Cleveland Ave. ppb 14.3 10.2 7.1 5.5 4 3 2.1 3.3 6.3 10.3 14.4 18.8 23.2 27.4 31.6 33.9 34.7 34.7 34.5 33.7 32.2 31.1 29.7 28.2