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Noise monitoring program
Active Air Quality Notification
  • An air quality ADVISORY for Unhealthy PM2.5 levels is in effect from 7/29/2025 08:30 to 7/31/2025 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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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 17.6 16.5 15.9 15.2 15.2 15.1 14.3 13.1 13.2 14.7 16.1 18.2 19.5 20.6 22.1 24.1 25.6 25.9 25.7 25 24.6 23.1 21 19.1
Brown Green Bay UW ppb 21.3 22.2 24.1 26.3 28.7 31.6 35.4 38.7 40.5 41.3 40.9 41.2 41.3 41.3 40.6 40.4 40.9 41.3 40.7 39 37 34.8 32.2 29.8
Columbia Columbus ppb 29.8 30.8 31.6 32.5 33.8 34.7 35.6 36 35.5 35.2 35.2 35.4 35.2 35.9 38 40.1 42.4 42.4 43.3 43.3 42.8 41.1 38.3 35.5
Dane Madison East ppb 26.7 28.5 29.5 32.2 34.4 35.7 35.9 34.1 32.2 30.9 31.6 30.6 30.7 31.8 34.2 37 40.3 42.7 43.1 41.6 39 35.9 31.3 26.3
Dodge Horicon Wildlife Area ppb 31.2 31.3 31.7 32.6 33.5 34.2 34.8 35.9 37.2 37.5 37.4 37.3 37.3 37.8 39 40.5 42.4 44.2 45.1 44.5 44 42.7 41 39
Door Newport Park ppb 27.2 26.8 26.5 26.7 28 29.5 31 32.4 33.7 35.3 37.3 39 40.4 41.6 41.9 42.8 44.3 44.5 41 37.7 34.9 31.4 29 25.4
Eau Claire Eau Claire DOT Sign Shop ppb 21.1 22.7 24.2 25.3 26.3 26.5 26.2 25.6 25.1 24.4 23.8 24.3 25.1 26.4 28.1 30.3 31.9 32.6 31.5 28.9 25.2 20.8 16.4 11.8
Fond du Lac Fond Du Lac ppb 29.2 29 30.1 31.5 33 34.9 35.6 36.1 36.8 37.5 36.9 36.4 36.1 35.7 35.3 36.8 38.4 39.7 40.5 40 39.1 37.5 36.7 35.1
Forest Potawatomi ppb 22.9 23 23.7 24.7 25.9 27.4 28.9 30.6 31.8 32.4 32.2 31.5 30.7 29.9 29.5 29 28.8 28.6 27.7 27.3 27.4 27.1 25.1 22.6
Jefferson Jefferson-Laatsch ppb 30 31 32.5 33.6 34.5 35.2 35.4 35.6 35.7 35 34 33.4 32.7 33.1 35 37.5 39.7 41.1 41.2 39.8 37.9 34 28.8 23.5
Kenosha Chiwaukee Prairie ppb 38.3 36.2 34.3 31.9 32.4 33.7 34.6 36.1 38.4 41.2 44.1 48.5 51 52 52.5 53.1 53.6 53.6 52.2 49.2 44.6 40.3 36.5 31.2
Kenosha Kenosha-Water Tower ppb 36.6 34.9 33.1 31.4 32 31.9 32.3 32.9 34 35.9 38.4 41.5 43.4 44.8 45.8 47.3 48.9 49.7 49 46.8 43.6 40.6 37.5 33.7
Kewaunee Kewaunee ppb 24.4 24.2 25.2 26.2 27.4 29.4 32.3 35.8 37.9 40.2 42.1 43.7 45.1 45.8 45.4 44 44 43.4 42.3 41.1 39.9 38.1 36.3 34.3
La Crosse La Crosse DOT ppb 35.2 36 36.5 37.1 36.8 35.5 35.4 35.4 35.4 35.5 35.7 36.4 38.2 40.2 40.9 41.3 41.6 41.1 41.1 39.2 35.6 31.4 26.9 22.3
Manitowoc Manitowoc ppb 22.2 22.5 23.6 24.2 25.3 26.8 28.2 29.8 32 33.8 35.7 38 40.2 42.3 44.9 46.6 47.5 46.5 42.1 37.5 33.6 29.1 24.6 19.9
Marathon Lake Dubay ppb 23.5 24.1 25.6 27.1 29.2 31.1 32.5 33.5 34.3 35.7 36.3 36.7 36.1 35.9 36 36.6 37.4 37.3 36.4 35.7 34.3 32.9 30.7 28.1
Milwaukee Bayside ppb 34.9 33.8 34.1 34.9 35.6 35 34.9 34.6 36.8 39.9 42.2 44.4 46.6 49 51 50.4 49.7 49.4 48.2 46.9 45.1 42.4 38.6 34.5
Milwaukee Milwaukee-16th St. Health Center ppb 32.8 33.2 32.9 32.4 31.5 30.6 28.8 27.1 25.9 25.5 26.7 28.9 31 31.6 34.6 37.6 40.3 41.6 41.6 40.5 38.7 38.3 36.4 34
Outagamie Appleton ppb 24.3 25.6 27 29 31.4 33.5 34.6 34.8 35.1 34.7 34.8 34.5 34 34.1 34.9 36.7 37.5 38.4 38.2 37.4 36.3 34.8 33.1 30.3
Ozaukee Grafton ppb 33.9 32.4 33.2 34.8 36.6 37.2 36.9 36.7 37.8 40.7 42 43.5 44.9 46.7 47.6 47.9 47.7 47.4 46.5 43.9 41.6 40 39.2 39
Ozaukee Harrington Beach Park ppb 29.2 28.1 28.7 30.3 32.6 34.4 35.3 35.9 37.5 40.2 42.1 43.6 45.1 47.7 49.8 51.3 51 50.2 49.3 47.7 45.4 42.3 39.6 36.8
Racine Racine-Payne & Dolan ppb 38.8 37.6 35.7 34.3 34.6 34.8 35.4 34.9 36.5 38.6 41.8 44.7 47.3 50.4 52.4 53.5 53.5 53.2 51.9 50.3 47.4 44.2 41.1 38.9
Rock Beloit-Converse ppb 25.5 26.6 30.1 34.2 36.6 37.5 37.1 35.6 34.1 33.8 32.8 32.1 32.8 34.5 37 39.7 42.4 43.8 43.4 41.2 37.8 32.9 27.6 22.2
Sauk Devils Lake ppb 30 31.7 33.8 36.4 38.7 40.2 41 39.9 39.1 37.3 35.8 35 34.9 35 34.8 36.2 37.6 38.3 36.1 31.6 26.3 20.8 19.5 16
Sheboygan Sheboygan-Haven ppb 24.8 25 25.6 27.2 29.4 31.5 32.8 33.6 34 35 35.9 36.4 37.1 37.6 38.2 39.1 40 40.5 40.1 39.1 37.6 36.5 35.4 34
Sheboygan Sheboygan-Kohler Andrae ppb 28.8 29.1 29.5 30.6 33.1 35.4 37.3 38.5 40 42 44.3 46.6 48 50.2 53 56.1 59.1 61.5 61.4 58.3 54.8 50.5 45.1 40.5
Vilas Trout Lake ppb 22.6 23.1 23.6 24.2 24.8 25.6 26.4 27 27.2 27.1 27 27.3 27.6 27.8 28.1 28.4 28.7 28.8 28.3 26 23.6 20.7 17.5 14.7
Walworth Elkhorn ppb 28.7 29.2 29.8 32 33.6 34.9 36.5 37.3 36.5 36.6 36.6 35.6 35.4 36.3 37.6 39.3 41.6 42.7 43.2 43.1 43.3 42.9 42 41.6
Waukesha Waukesha-Cleveland Ave. ppb 31.9 31.2 31.3 31.9 32.3 32 31.5 30.8 30.6 31 30.6 30.1 29.9 30.5 31.8 33.5 35.4 37.1 38.6 38.6 38 35.7 33 29.8