-
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 .

8-HR Ozone Summary

Filter by County:
Filter by Site:
Monday, 
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 31.1 28 24.7 21.7 20 17.7 16.9 16.9 18.4 21.5 25 28.7 29.8 32.6 35 36.6 36.9 36.9 36.7 36.3 36.2 36.4 36.7 37.2
Brown Green Bay UW ppb 38 37.2 36.4 35.2 34.8 33.3 32.3 31.9 31.8 32.1 32.9 34.2 35 36.5 37.9 38.9 39.9 40.5 39.9 38.7 37.5 35.8 33.7 31.3
Columbia Columbus ppb 36.7 34.7 32.4 30.1 28.8 27.8 27.8 28 28.6 29.8 31.5 33.8 34.9 36.9 38.9 40.6 41.9 43.3 44.1 43.5 42.9 41.6 39.9 38.1
Dane Madison East ppb 43.3 42.1 40.6 39.1 38.4 36.5 35 33.7 33.1 33.5 34.3 35.7 36.7 38.4 40.1 41.8 43.2 44.1 44.7 44.6 43.6 42.1 39.2 35.8
Dodge Horicon Wildlife Area ppb 37.6 36.2 34.5 33 32.4 31.3 30.4 29.9 30.2 30.8 32 33.6 34.6 36.5 38.5 40.3 41.7 42.6 42.8 42.4 41.7 40.5 38.2 36
Door Newport Park ppb 38.4 38.2 37.7 37.1 36.5 35.7 35.2 34.9 35 35.5 36 36.7 37.1 38 38.9 39.8 40.2 40.3 40.2 40.2 40.1 40 39.7 39.2
Eau Claire Eau Claire DOT Sign Shop ppb 33.8 30.5 27.2 23.1 21.6 17.3 15 15 15.7 18.6 22.1 27.5 29.7 35.2 39.5 42.2 44.3 46.3 48.1 48.6 48.3 47.6 47 46.1
Fond du Lac Fond Du Lac ppb 36.8 35.1 33.4 31.8 31.1 29.4 28.6 28.2 28.5 29.4 30.6 32.3 33.5 36 38.2 39.8 41.4 42.9 43.8 44 42.2 40.1 37.8 35.4
Forest Potawatomi ppb 34 33.6 33 32.3 31.7 31.1 31.2 31.7 32.2 32.4 32.8 34.8 36.9 38.6 39.3 39.4 39.4 39 38.3 36.9 35.6 34.2 33.3 33
Jefferson Jefferson-Laatsch ppb 38.5 37.3 35.4 33.5 32.9 31.1 30 29.6 29.9 30.4 31.6 33.4 34.8 37.5 39.8 41.7 43.4 44.7 45.5 45 42.1 39.3 36.3 32.7
Kenosha Chiwaukee Prairie ppb 39.8 38.4 37.1 35.6 34.6 33.2 32.3 32 32.3 33.3 34.5 36.9 38.6 41.1 43.4 45.4 46.8 47.8 48.4 48.2 47.2 46.3 44.8 42.3
Kenosha Kenosha-Water Tower ppb 36.6 35 33.4 31.8 30.7 29 28.5 28.6 29.4 30.6 32 33.9 35.2 38 40.3 42 43.3 44.3 45 45.2 44.7 44 43.2 41.6
Kewaunee Kewaunee ppb 37.3 36.2 35.2 34 33.2 32.5 32.9 33.2 33.6 34.4 35.4 36.9 37.1 37.9 38.2 38.4 38.6 38.6 38 37.1 36.4 35.9 35.1 33.9
La Crosse La Crosse DOT ppb 40 36.1 33.6 31.3 29.5 26.2 24.2 22.9 22.9 26 27.9 30.1 31.7 35.2 37.5 39.8 41.7 43.1 44.3 44.2 43.1 41.7 40 38.3
Manitowoc Manitowoc ppb 33.6 30.7 28.1 25.4 24 23.2 23.1 24.2 26.2 29.4 32.6 36.1 36.2 37.3 38 38.4 38.2 37.7 36.9 36 35.7 35.4 34.5 33.2
Marathon Lake Dubay ppb 37.9 36.8 35.5 34.2 33.6 32.3 31.5 31.3 31.6 32 32.7 33.7 34.2 35.6 36.7 37.6 38.3 38.8 39.2 39.3 39.2 38.7 37.8 36.7
Milwaukee Bayside ppb 35.6 34.1 32.7 31 29.7 28.6 29 29.5 30.4 31.3 32.4 34 35.1 37.2 38.8 39.9 40.3 40.4 40.4 40.1 39.5 38.5 36.7 35
Milwaukee Milwaukee-16th St. Health Center ppb 36.5 35.5 34.6 33.4 32.8 31.8 31.2 31 31.1 31.5 32.3 33.5 34.5 36.2 37.7 39.1 40 40.2 39.7 38.9 37.8 36.5 35.2 33.5
Milwaukee Milwaukee-UWM UPark ppb 38.3 37 35.7 34.1 33.2 32.2 31.7 31.6 31.9 32.7 33.5 35 36.1 38 39.7 40.9 41.7 42.1 42 41.5 40.7 40 39.1 37.9
Outagamie Appleton ppb 34.9 32.3 29.6 27 25.3 23.5 23.4 24.6 26.3 29.3 32.2 35.1 35.8 38.1 39.6 40.5 40.9 40.9 41 40.4 38.6 36.7 35.4 34.6
Ozaukee Grafton ppb 35.1 33.5 31.7 29.6 28.5 27.8 27.6 27.6 28.2 29.2 30.7 32.6 33.8 35.9 37.3 38.1 38.5 38.7 38.5 38 37.2 36.1 35 33.6
Ozaukee Harrington Beach Park ppb 36.6 34.7 32.3 30.4 29 27.3 26.3 26.2 26.9 28.4 30.5 32.7 33.2 34.7 35.9 36.6 36.9 36.8 36.4 35.4 34.9 34.5 34.4 33.8
Racine Racine-Payne & Dolan ppb 38.9 37.5 36 34.3 33.3 31.6 30.6 30 30.1 30.9 32.3 34.2 35.3 37.6 39.6 41.3 42.8 43.7 43.9 43.8 43.6 43.2 42.8 42.2
Rock Beloit-Converse ppb 29.5 26.6 23.7 20.9 19.8 19.4 20 22 24.7 27.9 31.5 35.5 36.7 39.5 41.7 43.3 44.6 45.4 45.7 44.8 42.2 39.6 36.1 32
Sauk Devils Lake ppb 42.9 41.6 40.1 38.7 38.3 36.6 34.8 33.8 33.2 33.3 33.8 34.6 35.4 36.8 38.4 39.7 40.7 41.3 41.6 40.7 38.3 35.8 33.2 30.8
Sheboygan Sheboygan-Haven ppb 36.8 34.5 32.1 29.3 28 26.2 25.5 26 27.5 29.8 32.6 36.1 36.3 38.1 39 39.1 38.9 38.7 38 36.9 36.1 35.2 33.9 32.6
Sheboygan Sheboygan-Kohler Andrae ppb 34.4 31.8 28.8 26 24.1 22.3 22.6 23.2 24.6 27.2 30.8 33.7 34.1 36.1 37.2 37.6 37.5 37.2 36.4 35.8 35.7 35.6 35.2 34.3
Vilas Trout Lake ppb 32.8 32.2 31.6 31.2 31.2 31.2 31.7 33.1 34.4 35.2 35.8 36.6 36.8 37.7 38.2 37.8 37.3 36.9 36.4 35.8 35.2 34.4 34 34
Walworth Elkhorn ppb 36.6 35.1 33.6 32 30.9 28.6 27.9 29.1 30.2 31.4 32.9 34.9 36.2 39.4 41.9 43.9 45.7 47.2 47.9 47.6 46 44.3 42.8 41.3
Waukesha Waukesha-Cleveland Ave. ppb 38.8 37.8 36.6 35.2 34.3 33.2 32.6 32 31.7 31.9 32.6 33.8 34.7 36.9 38.9 41.1 42.8 44.2 44.5 44.3 43.4 42.2 40.8 39.1