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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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Wednesday, 
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 17.9 17 16.3 16.1 16.2 16.2 16.5 17.6 18.9 20.5 22.2 23.8 25.1 26.7 28.3 29.3 29.7 29.7 29.2 28.7 28.3 27.9 27.4 26.5
Brown Green Bay UW ppb 45.6 44.3 42.7 41 38.8 36.3 34.1 32.2 31.3 31.2 31.2 31.4 32.3 33 33.6 34.7 35.2 35 34.4 33.5 32 31.5 31.6 31.1
Columbia Columbus ppb 44.8 40.6 36.6 32.4 28.9 26.1 24.4 23.9 24.7 26.6 29.2 32.4 35.7 39.1 42 44.5 46.5 47.7 48.3 48.1 45.7 43.3 40.7 38.6
Dane Madison East ppb 45 40.7 36.1 32.9 30.7 29.1 28.2 28.1 28.8 30.5 33.5 36.1 38.7 41.2 44.1 47.1 49.7 51.5 52 51.8 51.3 50.4 49.3 46.3
Dodge Horicon Wildlife Area ppb 49.8 45 39.8 35.3 32.1 29 26.2 24.3 24 25.2 27.6 30.7 34.1 37.9 41.9 44.9 46.5 47.3 47.5 47 45.9 44.4 42.4 39.3
Door Newport Park ppb 24.8 24.7 25 26.1 27.3 28.1 27.7 27.1 27.2 27.3 27.7 27.7 27.4 27.2 27.9 29 29.5 30.3 30.5 30.2 29.9 29.6 29 28.1
Eau Claire Eau Claire DOT Sign Shop ppb 34.7 32.7 31.1 30.1 27.8 24.5 23 23.3 24.7 25.4 26.8 28.8 32.9 37.7 41.6 44.8 47.7 49.7 50.3 48.6 45.9 41.7 36.4 30.8
Fond du Lac Fond Du Lac ppb 38.4 36.7 35 34.3 33.2 30 27.4 25.9 25.5 26.5 28.6 30.5 32.3 35.7 38.8 41.7 43.6 44.8 45.4 45.3 41.4 37.7 34.3 30.9
Forest Potawatomi ppb 29.1 31.1 32.6 33.7 34.5 34.2 33.2 31.5 29.5 27.1 24.3 21.7 19.7 18.5 18.3 18.5 18.9 18.8 19.1 19.1 19 18.8 17.7 16.2
Jefferson Jefferson-Laatsch ppb 40.3 35.7 31.8 28.3 25 22.5 21 21.2 22.4 23.7 25.4 27.8 31.1 34.8 38.2 41 43 44.5 45.4 45.8 45.8 45.4 44.8 43.7
Kenosha Chiwaukee Prairie ppb 44.6 41.2 38.4 35.9 33.4 30.2 27.4 25.9 27.2 29.2 31.2 34 37.2 40.9 44.9 48.9 51.3 52.8 53.8 54.3 53.3 51.5 49.3 47.1
Kenosha Kenosha-Water Tower ppb 43.8 39.7 35.8 32.5 28.1 23.6 20.6 20.1 21.5 23.5 25.9 28.4 32.4 36.8 41.2 44.8 47.2 49.1 50.1 50.7 50.4 49.2 47.3 44.5
Kewaunee Kewaunee ppb 36.4 36.5 36.7 36.9 36.3 35.9 34.9 33.6 32.8 32.8 33.3 33.1 33.2 33.9 35.4 37.3 38.4 38.4 37.6 37.4 37.1 36.7 36.1 35
La Crosse La Crosse DOT ppb 43.8 41.1 38.1 35.5 32.6 30 28.1 26.7 26 26.3 27.8 30.1 33 36.6 40.3 43.1 45.6 47.7 49.1 50.1 50.6 50.2 49.5 49.4
Manitowoc Manitowoc ppb 44.2 42.3 40.3 38.4 36.4 34.8 33.4 32 31.3 31.4 31.7 32.4 34 35.6 37 38.4 39.3 39.5 39.1 37.4 35.4 33.7 32.5 31.5
Marathon Lake Dubay ppb 41.4 37.9 34.7 31.1 26.7 23 20.2 18.7 18.7 19.7 21.6 24 27.8 32.1 36.1 39.5 42 43 43.1 42.3 40 37.4 34.7 31.6
Milwaukee Bayside ppb 43.7 41.9 39.2 36.2 32.7 28.7 24.9 23.2 24 25 27.4 30.5 34.5 39.5 44.8 48.8 50.9 51.9 52.3 53.2 53 51.2 48.6 45.7
Milwaukee Milwaukee-16th St. Health Center ppb 36.9 35.4 32.6 31.5 30.7 26.5 23.1 20.9 21 22.7 26.3 29 31.5 36.6 41.1 44.4 46.2 47.1 47.1 46.4 45.3 43.5 40.8 38.9
Milwaukee Milwaukee-UWM UPark ppb 44.5 41.8 39.4 35.7 31.4 27.2 23.4 21.9 22.6 24.8 27.1 31.4 36.7 42.4 48.3 52.6 55 56.4 56.7 56.2 56.3 54 51.3 48.2
Outagamie Appleton ppb 39.7 38.9 37.9 36.2 33.5 30.6 27.6 25.5 24 22.2 23.4 26.2 30.1 34.6 39 41.8 40.8 39.8 39.2 37.9 36 33.8 31.5 29.7
Ozaukee Grafton ppb 45.8 44.2 41.9 38.7 34.3 29.1 24.8 22.1 21.7 21.8 23.5 26.3 30.9 36.7 42 46.6 49.1 50.7 51 50.4 50.2 48.4 45.8 42.6
Ozaukee Harrington Beach Park ppb 47.2 46.3 45 42.9 40.6 38.3 35.5 32.2 30.4 30.4 31.4 33.4 36.2 39.6 43.6 47.7 50 51.5 52.4 52.1 50.8 48.6 45.5 42.3
Racine Racine-Payne & Dolan ppb 47 44.2 41.4 38.2 35 31.9 29 26.2 26 27.3 29 32.1 35.3 38.6 42.5 46.5 48.8 50.2 51 50.6 49.9 49.1 47.8 45.9
Rock Beloit-Converse ppb 45.5 41.6 38.1 34.8 32.2 29.3 26.9 25.5 24.4 23.4 26.8 30.6 34.5 39 43 46.6 47 47.5 47.9 48.2 48.5 48.5 47.5 45
Sauk Devils Lake ppb 47.9 44.9 41.8 39 36.3 33.8 31.9 30.8 30.5 31.1 32.3 34.1 36.3 38.9 41.9 44.8 47.4 49.2 49.9 50 50.1 50.8 51.4 51.7
Sheboygan Sheboygan-Haven ppb 45.4 44.6 43.3 41.3 38.9 36.4 33.8 30.9 29.2 28.7 29.3 30.8 33.2 35.9 38.4 40.8 41.5 41.2 40.7 39.9 38.2 36.2 34.8 33.6
Sheboygan Sheboygan-Kohler Andrae ppb 46.5 45.4 43.7 41.7 39.7 37.7 35.6 33.6 32.1 31.4 31.7 32.8 34.5 36.7 39 41.8 44.5 46.5 47.5 47.1 46 44 41.8 38.9
Vilas Trout Lake ppb 23.9 25.3 26.7 27.8 27.6 27.1 26.3 25.1 23.4 22 20.7 19.5 19 19.4 19.7 19.9 20.2 20.1 19.4 19 18.8 17.7 16.5 15.1
Walworth Elkhorn ppb 42.8 38.6 35.7 33.5 31.7 30.4 29.4 28.7 28.1 28.3 29.2 30.6 32.7 34.8 36.9 38.6 40.1 41.1 42.2 42.6 42.8 43.7 44 43.4
Waukesha Waukesha-Cleveland Ave. ppb 44.9 41 37.3 33.2 29.2 26.1 24.2 23.1 23.4 25 27.4 30.6 34.6 38.8 42.4 45.4 46.5 46.8 46.7 46.1 45.3 43.7 41.8 40.3