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Noise monitoring program
Active Air Quality Notification
  • An air quality ADVISORY for Unhealthy PM2.5 levels is in effect from 8/3/2025 12:00 to 8/4/2025 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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Sunday, 
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 23.7 20.6 17.3 16.8 18.5 20.4 21.7 23.8 27.3 31.7 36.7 39.4 40.4 41 41.8 42.6 44.8 46.9 49.1 51.1 53.3 56.2 56.3 56.2
Brown Green Bay UW ppb 25.5 24 22.3 20.9 19.6 18.9 18.9 20.1 21.5 23.4 26.4 29.9 33.9 37.6 40.5 42.2 43.6 44.6 44.9 44.8 45.9 47.3 48.3 48.7
Columbia Columbus ppb 32.6 31.6 30.5 29.1 28.1 27.9 28.3 28.5 29.4 30.9 33.2 36.3 40.5 44.6 48.4 52 55 56.4 57.2 57.4 56.6 55 53.2 51.2
Dane Madison East ppb 37 36 34.8 33.8 32.3 31.2 31.1 31.3 31.5 32.3 33.9 36.7 40.8 44.6 47.9 51.2 54.3 56.6 58.2 58.8 57.8 56.3 54.6 52.8
Dodge Horicon Wildlife Area ppb 36.7 35.8 34.3 32.3 30.5 28.7 27.8 27.4 28.2 29.5 31.9 35.3 38.6 42.7 46.7 50.4 53.9 56.7 58.3 59.4 60.2 60 59.1 57.5
Door Newport Park ppb 23.2 20.7 18.5 17.9 17 17.5 18.7 20.7 23.4 26 29.1 30.9 34.4 37 38.8 40 41.4 43.1 45.3 48 50.7 53.4 56.3 59.7
Eau Claire Eau Claire DOT Sign Shop ppb 38.8 38.3 37.7 37.5 36.8 36 35.4 35.1 35.5 36.5 38.1 39.9 42.1 44.5 47 49.5 51.8 53.7 55.4 56.6 57.5 57.9 57.7 56.9
Fond du Lac Fond Du Lac ppb 35.4 34.9 34.3 33.2 32.4 31.9 31.1 30.7 30.7 31.6 32.9 35.2 37.9 40.8 44.5 48.1 51.6 54.5 56.5 57.5 57.9 58.1 57.7 57.1
Forest Potawatomi ppb 33.2 33.2 34.1 35.1 35.9 36 35.8 35.8 36.3 37.1 37.5 38 38.6 39.6 41 42.2 43.1 43.9 45 46.5 47.9 48.8 49.4 50.2
Jefferson Jefferson-Laatsch ppb 34.9 32.4 29.6 26.7 23.7 22.1 21.5 21.4 22.9 25.4 29.1 33.7 39.3 44.6 49.3 53.7 57 59.5 60.8 61 59.7 57.9 55.6 53.4
Kenosha Chiwaukee Prairie ppb 35.6 32.8 29.2 25 20.8 18 16.9 17.4 19.1 21.9 25.4 29.1 32.8 37.4 42.1 46.8 51.4 55.1 58.4 61.8 64.8 65.2 61.3 56.9
Kenosha Kenosha-Water Tower ppb 34.9 32.5 29.4 25.7 21.3 18.4 17.2 17.5 18.7 20.7 23.8 27.9 33.1 39 44.4 49.6 54.4 58.2 61.4 63.9 65.4 63.8 60.4 56.2
Kewaunee Kewaunee ppb 29.4 27.6 25.2 23.6 23.3 23.3 23.5 25 26.7 28.5 31.1 33.3 34 36 38 39.3 40.7 42 43.6 45.8 48.2 50.1 51.6 54
La Crosse La Crosse DOT ppb 42 41.1 40.1 39.2 38.3 37.4 36.7 36.4 36.3 36.9 38 39.4 41.3 43.8 46.7 49.6 52.2 54.2 55.5 56.5 56.6 56 54.8 53.5
Manitowoc Manitowoc ppb 22.7 18.3 14 10.8 8.4 6.5 7.6 10.4 13.4 16.9 21.2 25.6 30.2 34.8 37.2 38.2 39.3 40.7 42.7 45.3 48.1 50.3 51 52.5
Marathon Lake Dubay ppb 36.4 36.1 36 35.6 35 34.2 33.6 33.7 34.3 34.9 36 37.4 39.3 41.6 44.3 46.7 48.7 50.6 52 53.1 53.6 53.5 53.2 52.7
Milwaukee Bayside ppb 31.1 27.7 23.7 19.6 15.5 12.6 12.9 14.4 17.2 20.4 24.5 29 33.4 38.2 42.2 46.1 50 53.8 56.9 59.5 61.1 61 59.1 58.1
Milwaukee Milwaukee-16th St. Health Center ppb 33.5 31.1 28 24.3 20.9 18.3 16 15.4 16.5 18.2 21.1 24.4 28.4 33 38.4 42.8 46.5 50.1 53.1 55.2 56.2 55.7 54 52.7
Milwaukee Milwaukee-UWM UPark ppb 33.8 31.4 28.3 25.3 22.2 19.9 19 19.6 21 23.4 26.6 29.9 33.8 38.1 42 45.9 49.9 53.5 56.5 58.7 60.2 60.1 58.7 57.8
Outagamie Appleton ppb 32.9 30.8 29.1 27.2 25.3 24.6 24.8 25.5 26.9 29.2 32.5 36.9 41 44.2 47.1 49.9 52.4 54.6 56.5 57.4 58.5 59 58.6 57.6
Ozaukee Grafton ppb 31.4 28.2 24.5 20.9 17.8 15.8 16 17.8 19.8 22.6 26.1 29.9 33.8 38.5 43 47 51.1 54.8 57.9 60.4 62 61.6 59.7 58.3
Ozaukee Harrington Beach Park ppb 32.8 31 29.4 28 26.6 25.7 26.1 26 26.7 27.7 29.2 31.2 33.5 36.3 39 42.8 46.3 50 54 57.4 60.5 62.8 62.1 60.5
Racine Racine-Payne & Dolan ppb 36.1 33.6 30.2 26.5 23.2 21 19.8 19.1 20.1 22.6 25.9 29.5 33.6 38.2 42.9 47.8 51.9 55.8 59.6 63.1 65.9 66.4 64.5 61.6
Rock Beloit-Converse ppb 36.9 33.1 29.4 25.8 22.3 19 17.4 17.5 19.6 23.1 27.2 32.3 38.2 44.2 49.3 53.7 57.2 59.5 60.8 60.8 60 59.2 57.8 56.1
Sauk Devils Lake ppb 34.1 33.6 33 34 36.1 37 37.5 38 38.9 39.7 41 42 43.8 45.7 47.7 50 52.1 54.2 55.8 56.9 57.6 58 58 57.6
Sheboygan Sheboygan-Haven ppb 29.6 26.6 23.6 20.9 18.2 17.4 18 19.5 21.6 24.5 28.1 32 36.2 39.8 42.6 46 50.1 53.6 56.2 58.3 59.1 59.5 58.8 57.8
Sheboygan Sheboygan-Kohler Andrae ppb 31.3 28.8 26.1 22.8 20.6 18.8 18.8 19.5 20.8 22.5 25.1 28.3 31.4 34.7 36.4 37.7 39.2 41 43 45.1 48.1 50.9 53.6 55.8
Vilas Trout Lake ppb 29.5 30.4 31.9 33.4 34.4 35.5 36.5 36.9 37.2 37.4 37.8 39 40.5 42 43.5 45 46.3 47.4 48.3 48.8 49.2 49.2 49.3 49.2
Walworth Elkhorn ppb 35.4 33.5 31.2 30.3 29.9 29.9 30.1 31.2 33.6 36.8 41.2 43.1 44.6 48.1 51.6 54.4 56.2 57.5 58 57.1 55.9 54.3 53.7 52.8
Waukesha Waukesha-Cleveland Ave. ppb 33.3 29.4 25.7 21.6 18 15.5 14.6 15.1 17.6 21.6 26.3 32 37.6 43.2 47.7 51.7 54.5 56.6 57.8 57.9 57.3 55.9 54.2 52.7