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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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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 33 31.7 30.8 30.5 31.6 33.1 33.7 34.2 35.1 37 39 40.7 42.3 44.3 46.4 48.2 49.5 49.9 49.7 49.2 48.3 46.4 43.9 41.7
Brown Green Bay UW ppb 29 28.3 27.4 26.5 24.9 23.4 23 22.6 22.8 23.7 25.4 28.3 32.6 37.5 41.7 45.5 48.3 50 50.5 49.8 48.5 46.6 45 43.5
Columbia Columbus ppb 36.7 34.6 32.6 31 30 30 30.7 31.9 33.4 35.5 38.1 41.2 44.7 47.7 50.1 52 53.5 54.3 54.4 52.4 50.8 48.8 46.2 43.7
Dane Madison East ppb 38 36.4 34.5 33.1 31.9 31 30.6 30.9 32.1 33.9 36.4 39.1 42.2 45.2 48 50.2 51.8 52.8 53.2 52.9 50.7 48 45.1 42.8
Dodge Horicon Wildlife Area ppb 36.4 32.5 28.6 25.8 23.8 22.3 22.2 23.9 26.5 29.8 33.4 36.9 40.3 44.2 47.6 50.2 52 53.3 53.9 53.8 53.1 51.5 49.3 47.1
Door Newport Park ppb 24.6 23.5 22.3 22.2 22.7 23 24.5 25.6 27.5 28.9 30.8 32.7 34.5 37 38.8 40.7 41.9 41.8 41.8 42.8 44.1 45.5 45.8 44.9
Eau Claire Eau Claire DOT Sign Shop ppb 35.6 30.7 26.7 23.5 19.1 15.9 15.2 15.4 18.2 22.9 27.4 31.9 38.1 43.8 46.8 48.8 50.6 51.8 52.5 52.5 52.3 51 48.2 44
Fond du Lac Fond Du Lac ppb 33.2 30.4 28.4 26.5 26 26.1 26.2 27.2 29.6 31.7 33.4 35.7 38.8 42.4 46.2 49.2 51.2 52.5 53 53 52 49.6 47.2 44.9
Forest Potawatomi ppb 38.9 36.6 34.2 32 30.2 29 28.5 29.3 29.1 29.4 34.2 38.8 43.4 47.1 49.9 50.7 50.1 50 49.4 48.8 48 47.5 46.7 45.9
Jefferson Jefferson-Laatsch ppb 34.4 30.7 26.9 23.4 21 19.4 19.6 20.8 23.8 27.6 32.1 36.9 41.7 46.1 49.4 51.9 53.7 54.5 54.8 54.1 52.6 49.9 46.4 43.6
Kenosha Chiwaukee Prairie ppb 30.4 28.6 26.4 24.1 20.4 17.8 16.5 16.3 16.2 17.2 19.9 24.2 29.8 35.8 41.3 46.2 50.1 53.3 55.1 55.6 55.8 54.7 52.1 48.4
Kenosha Kenosha-Water Tower ppb 30 28.9 26.6 23.8 20.6 18 17.5 17.8 19.2 21.7 25.9 31.4 37.8 44.1 48.7 52.2 54.2 55 55.2 54.8 53.6 51.7 48.6 44.6
Kewaunee Kewaunee ppb 32.7 32.6 32.7 32.9 32.6 32.5 32.3 32.3 32.5 32.8 33.2 33.2 33.8 35.2 37.8 40.7 43.5 46.5 50 49.7 49.2 49.8 49.4 48.2
La Crosse La Crosse DOT ppb 35.2 32.5 29.4 25.8 22.9 21.3 20.4 20.8 22.6 24.7 27.7 32.1 36.2 40.8 45 47.8 50 51.5 51.8 50.8 48.8 45.5 42.1 39.1
Manitowoc Manitowoc ppb 30.5 30.2 28.8 26.8 24.2 22.5 21.8 21.1 21.2 19.9 22 25.3 30.1 34.9 39.5 44 47.6 49 50.7 51.1 52.4 53 51.6 48.9
Marathon Lake Dubay ppb 38.2 36.7 35 33.5 32.2 31.3 30.3 30.2 31.1 33.1 36.3 39.2 41.9 44.7 47.7 49.7 50.7 51 50.9 50.7 50.1 49.2 48 46.7
Milwaukee Bayside ppb 27.4 24.2 20.6 17.1 13.8 11.6 12.2 13.8 17.3 22.2 27.3 32.7 38.1 43.2 46.8 49.8 51.7 52.6 53.4 53.8 53 50.2 46.4 43.2
Milwaukee Milwaukee-16th St. Health Center ppb 24.7 22.8 21.1 19.3 16.7 15.5 15.8 16.7 16.6 16.6 22 27.9 35.2 41.3 46.4 50.8 51.5 51.9 52.1 51.3 49 46.2 43.5 40.7
Milwaukee Milwaukee-UWM UPark ppb 27.6 25.3 23 20.3 17.5 15.3 14.9 16.5 19.6 24 28.5 33.5 38.9 44.1 48.2 51.5 53.5 54.3 54.8 54.4 53.1 50.2 47.1 44.2
Outagamie Appleton ppb 37.8 35.8 33.6 31.3 28.8 26.2 24.3 23.6 24.3 25.8 28.2 32.2 37.1 41.8 45.8 48.8 50.5 51.2 51.4 49.6 45.7 42.2 40 38.6
Ozaukee Grafton ppb 28.2 26.5 24.3 22.5 20.9 20 19.8 20.8 23.7 27.3 31.4 35.3 39.6 43.7 47 49.7 51.3 52.2 52.8 51.1 47.7 45.3 43.1 40.8
Ozaukee Harrington Beach Park ppb 26 24.7 23.5 22.8 22.1 21 21.1 22 24.9 28.2 31.4 34.7 38.7 43.3 47.2 50.4 52.1 53.7 55.1 55.7 55.3 53.9 51.6 49.4
Racine Racine-Payne & Dolan ppb 30.1 29.3 28.2 26.4 23.5 21 20.7 20.6 20.4 21.1 23.7 27.3 32.6 38.6 43.8 48 51.6 54.3 55.6 56.2 56.2 54.7 52.5 49.6
Rock Beloit-Converse ppb 34.1 30.8 27.4 24.7 23.2 23.2 23.2 23.8 26.3 30.4 34.9 39.4 44 47.8 50.3 52.6 53.6 53.8 53.6 51.8 48.4 44.3 40 35.3
Sauk Devils Lake ppb 32.3 29.2 26.5 24.1 22.8 21.9 23 24.5 26.6 29.8 33.5 37.8 42.2 46.5 49.1 51.1 52.8 53.6 53.3 51 48.4 46.2 43.7 41.3
Sheboygan Sheboygan-Haven ppb 26.3 24.8 22.9 20.8 19 17.9 18 19.1 20.4 23 26.7 31.1 35.6 40.3 44.2 47.1 49.4 51 51.6 51.7 50.5 48.6 45 41.6
Sheboygan Sheboygan-Kohler Andrae ppb 25.9 24.8 24.3 24.1 23.3 22.7 22.4 23.4 25.5 26.5 27.5 28.8 31.4 35.3 39.6 43.2 45.8 49.5 52.7 55.3 57 57.3 55.7 52.7
Vilas Trout Lake ppb 32 30.3 28.8 26.9 25.1 24.1 25.2 26.8 28.9 30.9 33.9 37.3 42 46.6 48.4 49.7 50.7 51.2 51 50.6 49.5 47.8 45.8 43.2
Walworth Elkhorn ppb 32.6 29 26.5 24.8 23.2 22.8 24 26.2 29.6 33.2 36.5 40.2 44.4 48.4 51.8 54.5 56.4 57.1 57 55.9 53.6 51.2 48.9 46.8
Waukesha Waukesha-Cleveland Ave. ppb 29.2 25.3 21.2 20.5 17.4 15.1 15.3 16.7 19.5 24.1 29.6 32 37.9 43.4 47.1 50.3 52.7 53.8 54.5 54.1 52 49.8 45.5 41.9