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Noise monitoring program
Active Air Quality Notification
  • An air quality ADVISORY for Unhealthy PM2.5 levels is in effect from 8/4/2025 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

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Tuesday, 
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 29.7 29 28.5 27.7 25.9 23 21.9 21.3 20.6 20.5 21.2 21.9 23.4 26.7 28.6 30 32.2 33.7 34.9 35.7 36 35.5 33.5 30.3
Brown Green Bay UW ppb 29.3 27.4 25 22.9 20.6 18.2 16.5 15.9 16.9 18.4 20.6 23.8 28.3 34.3 39.5 42.8 44.7 46.4 47.5 47 44.6 41.4 38.3 35.4
Columbia Columbus ppb 44.3 41.8 38.7 36.4 32.6 28.4 25.3 22.6 20.4 19.4 19.8 20.2 23 26.3 30.3 34.1 37.6 39.8 40.7 40.9 40 38.8 35.8 32.7
Dane Madison East ppb 15.3 8.9 8.3 4.7 2.5 4 5.5 7 8.3 10.3 13 16.4 20.9 24 28.7 33.8 38.7 42.6 45 45.9 46.2 44.6 41.9 39.1
Dodge Horicon Wildlife Area ppb 28.5 25.4 22.4 20.2 19.1 18.7 18 18.9 20.4 22.1 25.1 28.7 30.5 31.6 34.7 38.2 41.5 44 44.9 44.7 44.2 43.9 41.7 38.7
Door Newport Park ppb 29.2 27.1 24.5 22.5 20.7 18.2 16.5 16.3 17.5 20.1 23.6 26.6 29.8 33.8 37.4 40.1 42 42.8 42.5 40.5 37.3 34 30.7 27.9
Eau Claire Eau Claire DOT Sign Shop ppb 10.7 6.2 2.6 1.5 1.9 2.8 4.1 5.7 8.6 11.1 13 13.9 16.7 19.6 22.7 25.9 28 29.9 31.9 32.3 30.1 27 22.9 18.4
Fond du Lac Fond Du Lac ppb 28.6 27.1 25.8 24.1 23.1 23.2 23.4 23.4 23.2 23.8 25.2 27.5 30.5 32.8 35.4 38.2 41.1 43.2 43.6 42.9 41.7 40.6 39.5 37.2
Forest Potawatomi ppb 28 27.9 28 28.5 28.7 28.8 27.5 26.3 26.1 26.4 27.2 27.6 28.2 29 31 32.8 34.1 34.2 33 32.1 31.3 30.5 29.3 27.4
Jefferson Jefferson-Laatsch ppb 13.5 7.9 7.3 5.6 4.4 5 6.1 7 8.2 10.3 12.9 15.9 19.1 21.4 24.5 28.4 32.3 35.8 37.9 38.5 38.1 37.4 35.6 33.4
Kenosha Chiwaukee Prairie ppb 21.5 17.1 16 16.5 19 22.5 25.9 28.5 31 33.9 33.8 32.2 29.9 28.4 29.1 30.8 33 34.2 33.8 33.2 32.6 30.7 27.7 25.1
Kenosha Kenosha-Water Tower ppb 33.8 30.7 27.4 24.4 23 22.7 22.1 22 23.1 24.2 25.2 25.1 24.4 23.4 23.7 24.8 26.6 28.3 30 30.9 30 28.6 26.6 24.5
Kewaunee Kewaunee ppb 26.3 25.5 24.3 23.4 22.4 20.7 19.6 20.2 21.3 22.7 25 27.6 30.4 33.7 36.8 39.3 40.5 41.2 41.6 41.1 39.9 38.5 36.4 34.1
La Crosse La Crosse DOT ppb 21.3 17.6 13.8 12.2 10.3 9 9 9.9 11.5 13.1 16.8 20 23.3 27.1 29.7 33 36.1 38.8 39.2 38.2 37.1 35.4 32.7 28.7
Manitowoc Manitowoc ppb 13 9.8 7.3 6 5.2 4.4 4.2 6.2 8.9 12.7 17.2 22.1 27.4 33 34 36.5 38.1 40.6 42.2 42.8 41.7 39.6 37.6 35.1
Marathon Lake Dubay ppb 28.2 26.4 24.2 21.8 19.3 17.3 15.8 14.2 14.2 16.1 19.6 22.4 25 27.3 28.9 31.3 33.2 33.9 33.7 33.9 34.2 33.7 34.3 34.5
Milwaukee Bayside ppb 21.8 18.1 14.5 11.8 11.3 12 13.7 15.8 18.5 22.2 25.8 29.1 31.3 33.2 35.1 36.7 37.7 37.8 36 33.9 31 27.8 25.6 24.1
Milwaukee Milwaukee-16th St. Health Center ppb 20.5 18.6 17.1 16 15.8 16.8 18.1 19.6 22.5 24.2 25.7 27.4 28.8 29.6 30.3 32.3 34 35 35.8 35.5 34.7 33.6 34.1 33.6
Outagamie Appleton ppb 17 13.3 10.3 8.9 8 7.4 6.7 7.8 10.9 15 19.7 24.7 30.3 35.8 41.1 45 46.4 46.6 46 45 43.1 40.9 38.9 36.5
Ozaukee Grafton ppb 19.8 15.6 11.5 7.3 5.8 7.8 10.3 12.6 14.9 18.6 23.2 28.2 32.1 35.3 38.1 40.6 43.1 43.7 42.1 39.6 37.2 35 33.3 32
Ozaukee Harrington Beach Park ppb 25.8 24 21 17 15 13 12.7 13.6 14.2 15.1 18 22.2 26 30.6 34 37.2 39.7 41.2 40.9 40 37.9 35.9 33.7 30.8
Racine Racine-Payne & Dolan ppb 28 23.9 22.5 21.5 20.8 20.9 22 23.7 25.5 27.5 27.2 26.8 26.2 26.2 26.3 27.4 29.6 31.5 32.7 33 32.9 32.8 32.9 32.2
Rock Beloit-Converse ppb 14.4 9.3 9.2 8.7 8.5 8.2 8.7 9.4 9.7 10.2 10.4 10.7 11.1 12.6 16 20.6 25.3 30.1 33.4 34.5 35.4 34.2 30 25.2
Sauk Devils Lake ppb 17.6 15.8 15.4 15.4 15.8 16.7 17.6 18.6 19.9 23.2 28.2 33 36.9 39.9 42.3 45 47.7 48.1 45.1 41 36.4 31.9 27.5 22.9
Sheboygan Sheboygan-Haven ppb 22.3 18.3 14.4 11.3 9.2 7.2 6.3 6.7 7.9 10.1 13.5 17.1 20.8 24.9 28.7 32.3 35.6 37.9 38.7 38.4 37.4 36.9 36.8 35.7
Sheboygan Sheboygan-Kohler Andrae ppb 22.2 18.5 14.9 12.2 10.8 9.3 9.3 9.5 11.4 14.4 18 22.3 26.5 31 35 36.5 39.6 42 42.9 41.9 39.8 37.6 35.4 32.4
Vilas Trout Lake ppb 29.3 27.8 25.3 22.7 20 17.3 15.4 14.6 15.5 16.3 18.1 20.5 23.5 26.5 28.6 29.6 29.8 30.1 29.5 28.2 26.5 23.9 22.9 22.4
Walworth Elkhorn ppb 33.6 30.2 28.2 26 23.9 21.3 18.2 16.2 15.6 16 15.4 15.2 14.6 15.4 18.6 21.6 25.1 28.4 31.1 33.2 35.3 36 35.6 33.9
Waukesha Waukesha-Cleveland Ave. ppb 23.4 19.2 14.9 11.6 10.1 10.2 10.9 12.4 14.2 15.1 17.6 21 23.5 24.6 26.6 28.8 31.1 32.6 34.6 35.3 35.4 35.6 35.1 33.3