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Noise monitoring program
Active Air Quality Notification
  • An air quality ADVISORY for Unhealthy PM2.5 levels is in effect from 7/12/2025 00:00 to 7/14/2025 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,Pierce,Pepin,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

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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 28.6 24.7 20.8 19.7 21.1 21.1 21.7 22.2 22.2 24.1 26.8 27.8 27.4 27.6 27.9 28.3 28.4 28.2 27.2 26.1 25.5 23.6 20.8 17.5
Brown Green Bay UW ppb 50.6 47.4 43.8 40.3 36.7 33.2 30 28.2 26.8 26.1 25.9 26.5 28.1 30.1 32.2 33.5 33.9 34.2 34.3 33.8 32.5 30.8 28.5 26.1
Columbia Columbus ppb 36.1 33.8 31.7 29.7 28 26.9 25.3 25 25.9 27.7 30 33.1 36.4 39.6 42.9 44.9 45.9 45.9 44.6 42.5 40.4 38.3 35.7 33.1
Dane Madison East ppb 38.3 36.7 34.9 33.2 31.7 30.9 30.2 29.7 30 31.3 33.2 35.7 38.7 41.6 44.8 47.8 49.4 49.4 49.3 48.2 46.6 44.9 42.8 40.3
Dodge Horicon Wildlife Area ppb 40.8 38.4 36.2 34.3 32.3 30.2 28.5 27.7 27.8 28.6 29.9 31.4 33.2 35.6 38.4 40 41.3
Door Newport Park ppb 55.3 51.3 47.8 44.5 41.3 38.2 35.5 33.5 33 31.9 31.1 30.6 31 31.8 32.7 33.1 33 32.7 32.5 32.3 31.6 30.6 29 28
Eau Claire Eau Claire DOT Sign Shop ppb 28.5 22.1 16.9 13.1 11.4 11.5 12.6 14.6 17.5 20.9 23.8 26.6 29 30.8 32.6 33.7 34.3 34.4 33.3 31.6 29.3 27.3 25.7 24
Fond du Lac Fond Du Lac ppb 37.7 36.4 35.2 34 32.6 31.1 29.9 29 29.2 29.7 30.4 31.6 33.2 35.4 37.5 39.7 40.3 39.9 39 38.3 37.1 35.3 33.1 30.6
Forest Potawatomi ppb 40.1 39.1 37.9 36.5 34.9 33.4 32.2 31.3 30.9 31 31.3 32 33.2 34.5 35.1 35.8 36 35.5 35 34.3 33.3 31.9 30.4 28.5
Jefferson Jefferson-Laatsch ppb 37.3 34.8 32.6 30.7 28.2 26 24.4 23.2 23.4 24.8 26.9 29.4 33.1 36.9 40.6 43.4 45 45.8 45.7 45 44.1 42.8 40.4 38.1
Kenosha Chiwaukee Prairie ppb 44.4 42.2 40.1 38.5 37 35.7 34.8 34.2 34 34.7 36.7 39.8 43.3 46.8 49.9 52.4 54.6 55.3 53.7 51 48.4 46.1 43.9 41.6
Kenosha Kenosha-Water Tower ppb 41.3 38.8 36.8 35.1 33.9 32.9 32.1 31.7 31.8 33 35.1 37.6 40.3 43.3 46.1 48.6 50.5 50 48.7 46.9 45.3 43.6 41.6 39.4
Kewaunee Kewaunee ppb 51.9 48 44.6 41.6 38.6 35.7 33.2 31.8 31 30.7 30.9 31.6 33.1 35.1 37.2 38.6 39.4 39.9 39.8 39.3 38.1 36.9 35.6 34.4
La Crosse La Crosse DOT ppb 36.6 32.1 27.5 22.5 18.1 14.6 13.1 13.1 14.3 16.6 19.6 23.4 27.7 31.9 34.9 36.9 38.3 39.1 39.2 38.5 37.3 35.5 33 29.8
Manitowoc Manitowoc ppb 46.8 41.7 38.8 36.1 33.4 30.3 27.6 26.5 27 28.8 28.7 28.9 29.6 31 33.2 34.7 35.4 35.6 35.6 35.6 35.3 34.7 33.2 31.1
Marathon Lake Dubay ppb 40.1 37.4 35.1 33 30.9 28.9 27.1 26.2 26.2 26.6 27.3 28 29.3 30.8 32.4 33.6 34 33.6 32.7 31.6 30 28.1 26.4 25.3
Milwaukee Bayside ppb 45.2 43 40.8 38.9 37.8 36.4 34.6 33.4 33 33.7 34.9 36.4 38.5 40.5 42.1 43.4 43.8 43.4 42.7 41.6 39.8 38.2 36.7 35.1
Milwaukee Milwaukee-16th St. Health Center ppb 39.8 37.9 36.1 34.9 34.5 33.6 32.5 31.4 31.2 32.2 33.8 35.6 36.7 39 41 42.1 42.2 41.6 40.3 38.7 36.8 34.5 32.5 30.8
Milwaukee Milwaukee-UWM UPark ppb 43.6 41.8 40.2 39.1 38.1 37.3 36.2 35.1 35 35.8 37.1 38.6 40.7 42.7 44.3 45.2 45.4 44.8 43.9 42.8 41.3 39.5 38.2 36.9
Outagamie Appleton ppb 39.6 37.3 34.7 32.3 29.7 26.9 24.8 23.6 22.8 22.5 22.5 23 24.4 26.7 28.9 30.5 31.8 32.7 33 33.2 32.7 31.5 29.8 27.8
Ozaukee Grafton ppb 47 44.6 42.3 40.4 38.7 37.6 36.3 35.2 34.7 34.8 35.4 36.7 38.6 40 41.6 42.7 43.2 43.4 42.7 41.3 39.4 38 36.3 34.6
Ozaukee Harrington Beach Park ppb 47.4 44.1 41.5 39.5 37.3 35.5 34.2 33.1 33 33.4 34.3 35.4 36.7 38.2 40.1 41.8 42.7 42.9 42.1 40.9 39.7 38.2 36.4 34.7
Racine Racine-Payne & Dolan ppb 43.6 41 38.4 36.1 34.3 32.8 31.7 31.1 30.6 31.6 33.3 35.3 37.6 40.3 43.2 45.9 47.1 46.6 45.5 44.4 42.9 41.1 38.8 36.3
Rock Beloit-Converse ppb 41.8 39.2 36.6 35.4 34.4 29.8 27.3 26.1 26.3 28.3 32.3 35.7 38.4 43.5 47.6 50.9 53.1 54.3 54.4 53 50.8 48.6 46 43.3
Sauk Devils Lake ppb 40.7 39.5 37.6 34.8 31.8 27.9 24.9 23.6 23.4 24.1 25.8 28.7 32.3 36.7 39.9 41.8 43.1 43.6 43.3 43.2 42.9 41.5 40.6 39.3
Sheboygan Sheboygan-Haven ppb 46.6 43.5 41 39 37.1 35.4 33.7 32.9 32.8 32.8 32.5 32.5 33.2 34.3 35.6 36.7 37.4 37.4 37.2 36.7 36 34.8 33.4 31.8
Sheboygan Sheboygan-Kohler Andrae ppb 49.4 46.4 42.7 39.8 36.7 33.6 30.5 28.9 28.4 28.9 31 32.7 34.8 37.1 39.9 41.9 42.8 42.6 41.6 40.4 39.1 37.4 35.6 34
Vilas Trout Lake ppb 31.2 28.1 25.3 22.4 21.4 20.9 21.2 22.8 24.4 26.3 28.2 30.3 31.2 31.9 32.9 33.5 33.7 33.2 32.2 30.9 29.4 27.8 26 23.8
Walworth Elkhorn ppb 40.8 39.3 38.1 36.9 35.1 32.9 31.4 30.5 30 30.2 30.9 32.4 34.5 37.4 40.3 43.3 45.1 46.2 46.2 44.3 42.2 39.8 37.5 34.1
Waukesha Waukesha-Cleveland Ave. ppb 42.5 40.6 38.9 38.2 36.1 34.2 31.9 30.7 30.6 31.9 33.9 35.6 38.3 41 44.1 46.1 46.8 46.4 46.1 45.2 43.8 41.9 39.7 37.3