-
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:
Sunday, 
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 13.9 12.6 12.3 13.4 15.7 18.1 19.9 21.6 23.7 25.6 27.2 28.8 30.3 32 33.9 35.6 36.6 37.1 37 35.5 33 30.1 27.5 25
Brown Green Bay UW ppb 19.2 17.5 16.7 16.3 15.1 13.9 13.4 14.3 16.3 18.1 20.2 22.6 25.4 28.5 31.3 33.1 34.5 35.6 35.5 35 34.6 33.8 32.5 30.9
Columbia Columbus ppb 24.8 22.5 20.9 20 19.4 18.2 16.9 16 16.8 18.7 21 23.4 26.2 29.4 33 36.4 38.7 39.8 40.3 39.5 38 36.3 34.3 31.9
Dane Madison East ppb 25.3 23.7 22.2 20.8 19.5 18.3 17.7 17.7 18.1 19.5 21.6 24.6 28.1 32.2 36.3 39.7 41.6 42.8 43.1 42.5 41.5 39.8 37.6 35.9
Dodge Horicon Wildlife Area ppb 26.5 25.2 24.2 23.8 23.1 22.7 22.7 22.8 23.8 25.6 27.8 30 32.8 35.3 37.7 39.9 41.2 41.7 41.5 41 40.1 39.3 38.4 37.3
Door Newport Park ppb 24.4 23.8 23.8 23.8 23.1 22.1 21.1 21.1 22.2 23.1 24.6 26.5 28.7 30.5 32.3 33.7 35.1 35.9 35.6 34.2 32.3 30.8 30.4 29.9
Eau Claire Eau Claire DOT Sign Shop ppb 17 16.1 15.9 17.2 18.9 20.7 21.6 21.9 21.9 22.5 23.8 25.1 26.8 28.8 31.2 33.3 35.1 35.8 35.3 34 33 32 30.6 29.2
Fond du Lac Fond Du Lac ppb 22.2 21.3 20.6 20 19.3 19 19.3 19.8 20.6 22 23.6 25.8 28.4 31 33 34.9 36.5 37 36.8 35.9 35.1 34.1 33.5 32.8
Forest Potawatomi ppb 24.6 24.4 24.2 24.1 23.9 23.7 23.2 22.6 22.3 22.5 23.3 24.5 25.7 27 28.6 30.3 31.7 32.5 32.6 32.5 32.3 31.9 31.6 31.1
Jefferson Jefferson-Laatsch ppb 20.2 16.6 13.2 10 6.8 4.7 3.7 5.2 7.7 10.9 15.1 19.6 24.3 29.5 34.5 37.6 40.1 41.4 41.7 41 40.1 38.8 37.4 36.3
Kenosha Chiwaukee Prairie ppb 37.4 37.2 36.8 36.1 35.6 35.4 35.5 34.6 33.8 33.6 34.2 35.2 36.5 38.1 39.4 40.7 41.6 42 42.5 43 43.3 43 42.7 42.5
Kenosha Kenosha-Water Tower ppb 35.2 35.2 34.9 34.4 34.1 33.8 33.6 33.5 32.8 32.4 32.9 34 35.3 37 38.7 39.9 40.9 41.3 41.2 41.3 41.4 41.3 41 40.7
Kewaunee Kewaunee ppb 29.8 28.6 27.2 26 25.1 24.2 23.6 22.9 23.1 24.2 25.4 26.8 28.3 30 31.4 33.3 34.7 35.9 37 37.7 38 38.2 38.1 37.6
La Crosse La Crosse DOT ppb 32.3 31.3 30.4 31.1 30.8 29.7 28.5 27.7 27.2 27 27.8 28.6 29.3 30 30.9 32 33.3 34.7 35.7 36.6 37.7 38.9 39.9 40.1
Manitowoc Manitowoc ppb 17.7 16.6 16 17.4 18.8 21.2 23.8 24.7 25.2 26.1 27.2 28.7 29.8 30.5 31.6 33.4 35.2 36.6 37.1 37.7 38 37.5 36.8 36.1
Marathon Lake Dubay ppb 28 26.1 24.6 23.2 21.9 20.9 20.3 19.7 19.8 21.4 23.6 26 28.4 30.9 33.1 35.1 36.6 37.2 37.1 36.9 36.9 36.7 36.4 36.2
Milwaukee Bayside ppb 30.8 30.5 31 31.4 31.5 31.7 32.1 32.5 33 33.3 33.1 33.1 33.7 34.2 35.1 36.1 36.9 37.7 38.2 38.5 38.7 38.9 39.2 39.4
Milwaukee Milwaukee-16th St. Health Center ppb 28.7 28.6 29.2 29.8 29.9 29.7 29.6 30.1 30.6 30.5 30.1 30.4 31.3 32.7 34.4 35.4 36.2 36.9 37 36.8 36.5 36.2 36.1 36.3
Outagamie Appleton ppb 21.1 18.6 16.9 15.8 15.3 14.6 13.8 14.8 17 19.5 21.8 24.4 27.1 30.3 33.9 36.1 37.4 38.5 39.1 38.7 37.9 36.6 34.9 32.8
Ozaukee Grafton ppb 30.1 29.4 29.8 30.4 30.8 30.9 31.4 32 32.5 33.4 33.6 33.9 34.6 35.8 36.9 37.8 38.7 39.4 39.8 39.9 39.9 39.8 39.6 40
Ozaukee Harrington Beach Park ppb 28.3 27.8 28.4 28.9 29.3 29.4 29.9 30.4 30.5 31.2 31.4 31.5 32 32.9 33.8 34.7 36.4 37.6 38.6 39 39.4 39.8 40 40.5
Racine Racine-Payne & Dolan ppb 34.2 34.4 34.1 34.1 34.2 34.3 34.3 34.3 33.5 32.7 32.9 33.5 34.5 35.8 37.3 38.6 39.9 40.9 41.3 41.5 41.7 41.6 41.5 41.5
Rock Beloit-Converse ppb 25.1 23 21 19 17.4 16.5 16.2 16.5 17.4 19.3 22.7 26.7 31 35.9 40.8 44.2 46.5 47.8 47.8 46.5 44.5 41.2 37.9 35.5
Sauk Devils Lake ppb 29.4 28.5 27.8 26.9 26 25 23.9 23.4 23.1 23.7 25 27.1 29.5 32.2 35.2 37.7 39.2 40.3 40.9 41 40.5 39.7 38.4 37.3
Sheboygan Sheboygan-Haven ppb 24 23.2 22.4 22 22.3 22.6 22.9 23.8 25 25.9 27.4 28.8 30 31.4 33.2 34.7 36.4 38.1 38.6 38.5 38.5 37.9 36.5 35.3
Sheboygan Sheboygan-Kohler Andrae ppb 30.6 29.4 28.8 28.7 29 29.2 29.8 30.1 29.9 30.9 31.9 32.7 33.4 34.6 36.1 37.7 40 41.9 43.2 43.9 44.5 44.4 43.8 43.9
Vilas Trout Lake ppb 19.8 19.6 19.5 19.8 20.3 20.3 19.8 19.5 19.8 21.1 22.7 24.6 26.6 28.7 31.2 33.4 34.5 34.4 34.3 34 33.5 33 32.3 31.4
Walworth Elkhorn ppb 28.7 27.2 25.7 24.3 23.3 22.5 21.9 21.6 21.7 22.7 24.7 27.2 30 32.6 35.2 37.8 39.9 40.9 40.6 39.4 37.2 35.3 33.6 31.8
Waukesha Waukesha-Cleveland Ave. ppb 21.2 18.1 15.1 13.1 12.2 11.8 12.1 14 16.1 18.8 22.2 25.7 29.2 32.7 36.3 38.3 39.5 40.2 40.2 39.7 38.6 37.3 35.9 34.5