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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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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 25.8 22.2 18.2 14.6 11.2 9.1 9.4 11.4 14.2 17.4 21.3 25.2 29.4 33.5 36.1 37.4 38.3 38.9 39.1 38.9 38.8 38.2 38.2 38.2
Brown Green Bay UW ppb 31 28.8 28.1 28.3 27.2 24.9 24.6 25.5 26 27.3 28.5 30.2 33.3 37.7 39.8 41.5 42.6 43.3 43.3 41.5 39.8 37.9 36.4 34.6
Columbia Columbus ppb 34.1 32 29.9 28.8 27.9 25.9 24.5 23.9 23.9 25.1 27.1 29.3 32 36.1 40 43.5 46.2 47.3 47.5 47 46 44.5 42.4 40
Dane Madison East ppb 32.6 29.9 26.9 24.4 21.4 19.5 17.9 17 17.1 18.6 20.8 24 28.3 32.8 37.3 41.3 44.4 46 46.7 46.5 45.2 43.2 41.5 39.5
Dodge Horicon Wildlife Area ppb 33.6 31.6 29.6 28.3 27 24.8 24.1 23.8 24.6 25.8 28 30.2 32.8 36.7 39.6 42.4 44.3 45.5 46.1 45.6 44.9 43.7 42.8 41.7
Door Newport Park ppb 41.7 41.3 40.2 39.2 37.9 36.6 35.4 34.7 34.1 33.7 34 34.8 35.9 37.2 38.3 39.5 40.8 41.8 42.1 41.9 41.8 41.5 41 41.1
Eau Claire Eau Claire DOT Sign Shop ppb 19.5 14.9 9.6 6.7 5.4 5.9 7.5 10.7 14.2 17.3 22 26.3 31.8 37.3 41.8 45 47.9 50.1 51.3 51.1 49 46 42.7 39.8
Fond du Lac Fond Du Lac ppb 34.4 32.7 31.4 29.7 29.1 28.6 28.2 28.2 29.1 30.7 32.4 35.1 37.4 39.6 41.5 43.3 44.7 45 44.8 44.2 43.1 41.7 40.4 39.2
Forest Potawatomi ppb 45.6 45.8 45.8 45.1 45 45 45 44 43.6 44.1 44.7 45.5 47 48.5 50.1 52.3 53.5 54.2 54.3 53.8 52.9 51.8 50.7 49.8
Jefferson Jefferson-Laatsch ppb 30.7 28.5 26.5 24.7 23.5 22.2 21.4 21.4 21.9 23.2 25.4 28.4 31.8 35.4 38.1 40.3 42.5 43.8 44.7 44.4 43.5 42.2 41.4 40.4
Kenosha Chiwaukee Prairie ppb 31.4 29.1 26.1 25.1 23.7 20 19.6 19.6 21.4 25.4 29.8 30.4 30.9 33.9 34.6 34.7 34.8 35.2 35.8 36.6 37.3 38.4 39.8 41.3
Kenosha Kenosha-Water Tower ppb 25.1 23.9 23 22.3 21.3 18.3 16.7 16.8 18.3 20.9 23.7 25.1 26.2 29.5 32.7 35.3 36.7 37.9 38.9 39.3 40.3 41 41.4 41.8
Kewaunee Kewaunee ppb 34.7 33.1 31.8 31.2 30.6 30.3 31.1 31.5 32.3 33.6 34.6 35 35.5 36 36.4 36.8 37.2 37.9 38.4 39 39.9 40.1 39.9 39.6
La Crosse La Crosse DOT ppb 30.8 27 23.9 20.4 17.4 14.7 12.6 11.2 11.1 11.7 13.5 17.4 22.3 27.6 32.5 37.3 41.9 45.7 47.7 48.3 48.2 48.4 48.1 47.5
Manitowoc Manitowoc ppb 24.9 21.1 17.7 14.6 12.6 10.8 11 12.7 15.2 18.8 22.2 26.2 30.3 34.4 37.6 39.5 41.1 41.9 42.4 42.1 40.7 39.8 38.4 36.6
Marathon Lake Dubay ppb 43.2 41.7 40.4 39.6 37.8 35.5 34.4 33.8 34.4 35.7 37.1 38.6 41.6 45.1 47.6 50 51.3 52.4 53.2 53.6 53.4 52.9 51.9 50.5
Milwaukee Bayside ppb 17.4 13.4 9.5 5.9 3.2 1.9 3.8 7.2 11 14.9 19.2 23.3 27.4 31.5 33.1 33.8 34.7 35.4 35.8 36.7 37.8 38.9 39.9 40.6
Milwaukee Milwaukee-16th St. Health Center ppb 15.1 11.9 8.8 5.8 3.3 2 2.7 5 7 10.1 13.5 17 20.3 23.5 26.1 27.7 28.9 28.8 28.3 26.6 26.8 26.9 27.5 28.1
Milwaukee Milwaukee-UWM UPark ppb 20 16.2 12.4 8.7 5.4 3 3.8 6.9 10.6 14.3 18.4 22.4 26.5 30.3 32.1 33 33.7 34.5 35.3 36.3 37.5 38.6 39.7 40.6
Outagamie Appleton ppb 31.7 29 27.2 25.3 23.2 20.6 20.3 20.3 21.7 23.8 25.9 29 32.9 37.5 40.4 43.1 44.8 46 46.3 45.3 44 42.2 40.2 38
Ozaukee Grafton ppb 20 17.1 13.6 10.1 8.5 7.5 7.8 10.2 13.1 16.2 20.3 24.4 28.1 32.2 35.2 36.8 38.6 40.1 41 41.6 42.3 42.2 42 41.2
Ozaukee Harrington Beach Park ppb 28.4 26.5 24.5 23.2 21.5 19.4 19.7 21 22.5 25.7 28.7 29.5 30.1 32.7 34.4 35.6 37.1 37.6 38.3 39.4 40.2 39.8 39.2 38.2
Racine Racine-Payne & Dolan ppb 19.2 15.4 11.7 8 5 3.6 6.3 9.3 12.7 16.9 21 25 29 32.2 32.6 33 33.4 33.8 34.4 35.3 36.2 37.4 38.6 39.6
Rock Beloit-Converse ppb 29.9 27.2 24.3 21.5 19.4 17.6 16.3 15.4 15.4 16.6 18.6 21.2 23.7 26.1 28.8 31.7 34 35.5 36.6 37 37 36.8 36.5 35.6
Sauk Devils Lake ppb 33 30.9 28.9 28.3 28.5 28.5 27.6 27.5 28.8 30 31.5 32.8 35.5 38.4 41.9 44.9 46.8 48.7 50 50.4 50.1 49.2 47.7 46.1
Sheboygan Sheboygan-Haven ppb 31.2 28.7 26.8 24.4 22.3 20.6 20 19.9 20.8 23.1 25.3 28.2 30.9 34.1 36.7 39 40.4 41.2 41.9 42.3 42.1 41 40.2 38.6
Sheboygan Sheboygan-Kohler Andrae ppb 28.4 26 22.4 19.6 16.5 14.2 14.2 15.8 17.2 19.4 22.9 25.6 28.6 32.1 34.3 35.2 35.7 36.2 37.2 38.1 38.8 38.5 37.7 37.4
Vilas Trout Lake ppb 36.4 35.1 33.3 31.1 29.3 28.2 27.1 26.3 27 28.3 30.5 33.5 36.3 39.4 43.4 46.5 47.7 47.5 46.7 45.9 45.2 44.4 43.1 41.6
Walworth Elkhorn ppb 25.9 23.9 22.4 21.6 20.7 21.1 22.2 23.5 24.9 26.6 28.1 29.3 30.2 31.8 33.4 35.2 36.8 38 39 39.4 39.2 38.1 37.4 36.1
Waukesha Waukesha-Cleveland Ave. ppb 22 17.5 13 9.2 6 3.8 2.3 2.8 4.1 6.6 9.9 14 18.7 23.1 27.5 31 33.9 35.7 36.9 36.9 36.2 36.7 36.9 36.9