-
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:
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 23.7 22.6 21.3 21 22.3 24.2 25.8 27.3 27.6 27.1 27.5 28.8 29.6 30.3 31.1 32 32.9 34 36.4 36.9 36.2 35 33.6 32
Brown Green Bay UW ppb 29.2 27.8 27.6 27.2 26.7 26.2 26.1 25.8 25.5 25.5 25.5 26.4 27 27.6 28.4 29.2 30 30.4 30.2 28.8 26.9 26 24.9 23.8
Columbia Columbus ppb 30.4 28.5 26.9 26.7 26.9 26.9 26.8 27.1 27.9 28.5 28.5 28.3 27.9 27.6 27.8 27.6 25.9 24.6 23.8 23.4 23 22.5 21.9 21.4
Dane Madison East ppb 34.7 33.3 32.1 30.9 29.5 28.3 27.3 26.4 25.9 25.3 24.3 23.9 23.5 23.3 22.8 22.2 21.2 20.8 20.8 20.4 20.9 21.7 22.1 22.9
Dodge Horicon Wildlife Area ppb 35.8 34.2 32.9 32.3 31.6 30.3 28.7 28.1 28.9 29.5 29.8 29.4 29.2 29.4 29.8 29.2 27.6 26.2 25.2 24.4 23.8 23.6 23.4 23.2
Door Newport Park ppb 29.2 28.9 29.4 30.5 31.9 33.4 33.8 33.7 33.6 33.7 33.9 33.9 33.9 34 33.9 34.3 35.1 35.7 36.7 38 38 36.6 34.9 33.2
Eau Claire Eau Claire DOT Sign Shop ppb 28.1 27 26.9 26.9 26.1 24.8 24 23.7 23.5 23.7 24 24.8 26.2 28.6 30.4 31 31 32.4 32.3 32.2 31.7 30.5 29.5 29.1
Fond du Lac Fond Du Lac ppb 31.4 30.5 30.1 29.9 29.4 28.6 27.5 26.4 27.4 27.7 27.9 27.8 27.8 27.8 28 28.3 27 26.3 25.1 24.4 23.7 23.2 23 22.8
Forest Potawatomi ppb 30.5 30.3 30.3 29.9 29.1 28.9 28.7 28.6 28.7 28.7 28.5 28.6 29.6 29.8 30.6 31.2 31.7 32.2 32.9 33.5 33.2 32.6 31.1 29.9
Jefferson Jefferson-Laatsch ppb 35.6 34.6 33.5 32.5 31.4 30.4 30.1 30 28.9 27.9 27.2 26.8 26.7 26.4 25.4 23.9 23 21.9 21.2 20.6 20.2 20.2 20.6 20.8
Kenosha Chiwaukee Prairie ppb 42 41.5 40.3 38.9 37.4 36.1 34.9 33.7 32.4 31.4 30.2 29.2 28.4 28 27.9 27.8 28.6 29.8 30.2 30.7 30.8 30.3 29.4 28.7
Kenosha Kenosha-Water Tower ppb 40.5 40.1 39.3 37.8 36.2 34.5 32.5 30.8 28.9 27.2 26.2 25.2 24.3 24 24.3 24.6 25.1 26.1 26.7 27.7 28 27.5 26.8 26.2
Kewaunee Kewaunee ppb 37.2 36.9 36.4 36.1 35.8 35.4 35 34.9 34.5 34.1 34.4 34.6 35 35.8 36.4 36.7 37.1 37.4 36.5 35.2 33.4 31.1 28.9 27.6
La Crosse La Crosse DOT ppb 39.9 39.2 38.3 36.9 35.5 34.2 33 31.8 31 30.3 29.8 29.9 30.4 31.7 32.9 34.2 35 35.8 37.6 38.4 38 36.3 34.2 32.1
Manitowoc Manitowoc ppb 35.7 35.7 36 35.5 35.4 35.7 35.7 35.4 34.3 33.5 33.1 33.1 33 33 33.2 33.4 33.5 32.9 31.9 30.4 28.7 26.6 24.9 23.5
Marathon Lake Dubay ppb 35.9 35.2 34.4 33.1 31.5 30.1 29.1 28.4 27.8 27.7 27.8 28.1 29 29.4 29.6 29.6 29.4 28.5 27.6 26.2 24.3 22.4 21.3 21.6
Milwaukee Bayside ppb 39.6 39.6 39.5 39.2 38.6 38.2 37.3 36.2 35 33.9 33.1 32.2 31.8 31.3 31.2 31.5 31.4 30.9 30.4 30.2 29.1 28.5 27.4 26.1
Milwaukee Milwaukee-16th St. Health Center ppb 36.5 36.5 36.9 37 36.7 36.3 35.1 33.3 31.3 29.9 28.3 27.2 26.3 25.1 24.8 25.2 25.5 24.9 24.5 24.3 24.2 24.6 24.5 24.2
Outagamie Appleton ppb 30.1 27.3 25 23.8 23 22.3 21.3 20.4 20.8 21.7 23 23.8 24.3 25 26.1 26.9 27.2 27 26 24.9 23.9 22.8 21.8 21.1
Ozaukee Grafton ppb 40.3 40.3 40.1 39.9 39.4 38.9 38.6 37.4 36.1 35.1 34.1 33.2 32.6 32.4 32.1 32.4 32.4 31.8 31.1 29.9 28.6 27.4 26.3 25.3
Ozaukee Harrington Beach Park ppb 40.5 40.2 39.8 39.5 38.9 38.1 37.6 36.4 35 33.9 32.8 31.9 31.1 30.7 30.5 30.5 30.6 30.1 29.2 28.3 27.1 25.9 24.6 23.6
Racine Racine-Payne & Dolan ppb 41.2 40.9 40.3 39.3 38.6 37.6 36.4 35 33.7 32.4 31.6 31.1 30.1 29.7 29.6 29.7 29.6 29.5 30 30.3 30 29.3 28.4 27.6
Rock Beloit-Converse ppb 33.2 30.8 28.5 27.1 25.9 25.3 24.8 24 23.6 23.3 22.9 22.1 21.2 20.3 20.8 22.7 23.5 23.7 24.1 24.9 25.8 26.2 24.7 22.5
Sauk Devils Lake ppb 36.9 36.6 35.9 35.1 34.2 33.6 33.1 32.3 31.9 31.5 31.2 30.6 30.1 28.8 27.8 27 25.5 23.9 22.5 21.9 22 22.6 23 24.4
Sheboygan Sheboygan-Haven ppb 35.1 34.7 34.4 34.3 33.7 33.4 33.4 33.2 31.5 30.3 29.9 29.6 29.2 29 28.9 29.2 29.6 29.4 28.5 27.1 25.7 24.8 23.9 23.1
Sheboygan Sheboygan-Kohler Andrae ppb 43.3 42.4 41.4 40.6 39.7 39.2 38.7 37.7 36.7 35.9 35.4 34.9 34.3 34.2 34.3 34.2 34 33.4 32.3 31.1 29.4 27.3 25.1 23.5
Vilas Trout Lake ppb 30.7 30.2 29.7 29.3 29 28.7 28.1 27.9 27.9 28.5 29.3 30.5 31.7 32.7 33.8 34.9 35.8 36 35.4 34.1 32.6 31.3 29.9 28.6
Walworth Elkhorn ppb 29.7 27.8 26.7 25.8 25.9 25.8 25.3 25.1 25 24.9 24.1 23.2 22.2 21.2 20.8 20.9 21.9 23 23.9 24.6 25.4 26.1 26.3 25.6
Waukesha Waukesha-Cleveland Ave. ppb 33.4 33 32.8 32.5 31.8 30.5 29.5 28.4 27.6 26.2 24.5 23 21.8 21.7 20.8 20.9 20.7 20.4 19.9 19.9 20.7 21 21.9 21.7