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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

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Thursday, 
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 21.3 19 17.4 17.2 18.5 20.4 22 24 27.1 30.9 35 39.1 43.4 47.6 51.6 54.8 57.5 60 61.9 62.9 63.3 63.2 62.3 60.7
Brown Green Bay UW ppb 36.9 34.9 32.9 31.1 28.4 26 24.2 23.9 24.6 26.4 28.7 31.4 35.5 39.9 44 47.7 50.7 52.5 52 51.1 49.1 46.7 44.1 41.4
Columbia Columbus ppb 36.1 34.2 32.7 31.8 30.9 29.4 29.4 30.3 31.4 32.8 34.2 36.2 39.3 43.9 47.9 51.1 53.9 55.9 57.5 57.7 57 55.6 53.1 50.6
Dane Madison East ppb 35.5 32.3 29.1 25.6 21.2 17.6 16.7 17.2 19.2 22.2 26.2 32 39.2 46.1 50.6 54.1 56.8 58.9 60.2 60 58.7 57.3 56.2 54.5
Dodge Horicon Wildlife Area ppb 33.1 31.8 30.4 29.7 29.6 28.6 27.7 27.8 28.8 30.4 32.8 34.2 35.9 38.8 41.8 44.7 47.4 50.3 53 54.1 54.4 53.4 51.5 49
Door Newport Park ppb 19.3 16.1 13.4 12.1 12.1 12.8 13.9 16.3 19.2 22.1 25 27.8 30.2 32.4 34.4 35.7 36.6 37.3 37.7 38.2 38.5 38.7 38.8 39.2
Eau Claire Eau Claire DOT Sign Shop ppb 17.8 12.9 8 3.8 1.9 2.5 5.3 10.5 16.3 22.4 28.8 35.5 42.1 48.7 53.5 56 58 59.6 60.7 60.6 59.7 58.4 56.6 54.9
Fond du Lac Fond Du Lac ppb 36 33.9 32.2 30.6 29.1 27.5 26.9 26.9 28.1 29.7 31 32.6 35.1 38.2 41.4 44.7 47.4 49.6 51 51.7 51.4 49.9 48 45.3
Forest Potawatomi ppb 31.7 30.1 28.7 27.9 27.5 27.2 27.1 27.5 28.7 30.3 32.2 34.9 38.1 41.5 45 48.7 51.9 54.2 56 56.7 56.6 56.3 55.7 54.8
Jefferson Jefferson-Laatsch ppb 30.1 26.5 22.5 18.2 16.5 16.9 16.6 40.8 45.7 47.6 49.2 52.3 54.6 56.5 57.4 57.4 56.4 53.9 50.4
Kenosha Chiwaukee Prairie ppb 45.7 41.8 39.6 40.1 39.7 41.2 43 44.2 45.4 46.1 45.8 45.7 45.8 45.8 46.2 47.1 48.1 48.6 48.5 47.6 46.1 45 43.6 40.8
Kenosha Kenosha-Water Tower ppb 37.9 35.3 33 31.9 31.3 30.9 31.4 31.9 33.8 34.8 36 36.7 37.2 38.4 39.1 40 40.2 40.4 40.2 39.6 39 38.6 37.9 37
Kewaunee Kewaunee ppb 48.4 44.5 40.6 36.6 32.8 29.7 27.6 26.9 27.4 28.5 29.8 31.2 33.1 35.1 37 38.1 38.9 39.3 39.6 39.5 39.3 38.6 37.9 37.2
La Crosse La Crosse DOT ppb 44 40.1 35.6 31.5 27.8 24.5 23.1 22.4 24.1 26.4 29.6 33.3 38.1 43.4 48.1 52 55 56.8 57.7 57.5 56.5 54.8 52.5 49.8
Manitowoc Manitowoc ppb 27.5 25.6 23 19.5 15.8 12.6 10.5 10.3 9.7 9.2
Marathon Lake Dubay ppb 33.4 32.3 31.4 29.1 27 25.1 23.7 23.4 23.9 25.5 28.1 32.3 36.8 41.4 45.7 49.3 51.8 53.5 53.7 53.6 52.8 51.5 50 48.5
Milwaukee Bayside ppb 42.8 43.6 43.1 42.1 39.9 37.7 36.9 34.9 32.4 30.9 31 31.9 34.3 37.3 39.2 40.5 41.4 41.9 42.2 42 40.6 38.6 35.9 34.1
Milwaukee Milwaukee-16th St. Health Center ppb 38.1 38.8 39.2 39.4 37.7 36.1 35.3 34.8 32.6 30.3 28.8 29.6 30.9 32.3 33.9 35.7 36.8 36.9 36.5 36.2 35.3 34.2 32.5 30.2
Milwaukee Milwaukee-UWM UPark ppb 42.5 43.6 43.6 43.1 41.7 39.9 38.8 37.3 34.8 32.6 31.5 31.6 32.9 34.8 36.5 37.7 38.6 39.1 39.7 39.3 38.3 36.9 35.5 33.8
Outagamie Appleton ppb 32.1 30.9 30 29.1 27.4 26 26 27 27.8 29.1 30.7 33.2 36.7 40.3 43.1 45.6 47.9 49.8 51.4 52.8 54.4 54.5 53.5 52
Ozaukee Grafton ppb 40.8 40.1 38.1 33.6 30.1 27 25.9 24.1 22 21.4 22.3 26.4 30.5 34.2 36 37.5 38.5 39.3 39.7 39.9 39.7 37.8 36.2 34.6
Ozaukee Harrington Beach Park ppb 43.4 41.4 39.2 37.3 34.3 31.6 28.4 26.3 25.5 26.1 27.4 29.2 32.7 35.9 37.7 38.9 39.7 40.5 40.9 40.8 40.5 39.9 38.5 36.2
Racine Racine-Payne & Dolan ppb 36.6 35.6 35.7 36.7 36.7 38 38.8 39.3 38.9 38.9 38.2 37.3 38 38.8 40.3 41.6 42.4 42.5 42.3 41.9 41.3 40.2 39.2 38.2
Rock Beloit-Converse ppb 39.6 36.3 32.5 28.8 25.2 21.9 21.1 20.9 22 21.8 26.3 31.8 38.8 45.5 50.2 53.7 56.3 56.8 57.8 56.8 53.3 50.3 46.9 44
Sauk Devils Lake ppb 32.8 29.9 26.5 23.4 21.2 20.2 19.6 21.1 22.9 25.3 29.2 33.6 38 42.6 47.3 50.4 53.4 55.7 56 54.1 53.3 52.5 51.9 50.9
Sheboygan Sheboygan-Haven ppb 42.3 40.3 37.4 34.4 30.9 26.6 23.6 22.4 22.6 23.7 26.2 29.2 32.6 35.6 37.9 39.4 40.5 40.9 41.1 40.9 40.2 39.2 37.9 35.9
Sheboygan Sheboygan-Kohler Andrae ppb 44.7 42.8 40.9 39.1 36.2 31.1 27.2 25.1 24.9 25.6 26.8 28.6 32.1 36.1 39.4 41.5 42.8 43.7 44.1 44.2 43.9 43.1 42.1 40.9
Vilas Trout Lake ppb 21.9 19.4 16.8 14.2 11.9 11.7 12.7 14.5 17.5 21.6 26.9 33 39.7 44.8 49 52.6 55.2 56.9 57.4 57.6 57.4 57.2 57 56.7
Walworth Elkhorn ppb 39.3 37 34.8 33.3 32.2 31.8 32.2 32.5 33.6 35.4 38.1 40.8 42.2 44.9 47.5 50.1 52.4 54.1 55 54.1 51.9 48.7 45.4 41.7
Waukesha Waukesha-Cleveland Ave. ppb 35.6 33.4 31.9 32 31.2 30.6 30.4 30 30.6 32.1 34.2 35.4 37.8 40.6 43.9 47.3 49.8 51.4 51.3 50.4 48.9 46.8 44 40.8