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Noise monitoring program
Active Air Quality Notification
  • An air quality ADVISORY for Unhealthy PM2.5 levels is in effect from 8/1/2025 12:00 to 8/2/2025 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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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 29.1 25.1 20.9 16.5 12.8 10.3 8.2 7.5 10 13.1 16.7 20.1 23.8 27.2 29.8 30.9 29.4 29.7 29.7 28.9 27.1 26.5 26.3 26.8
Brown Green Bay UW ppb 60.2 53.5 48 43.5 39.2 36 33.9 33 32.9 34 36.2 38.9 42.1 46.1 49.9 53.9 56.4 57.1 55.8 53.7 51.6 48.7 45.4 40.9
Columbia Columbus ppb 40.9 38.2 35.4 33 30.6 28.5 27 26.3 27 28.8 32.1 35.8 39.6 43.3 46.1 48.2 48.7 48.5 46.8 44.3 41.5 38.6 36.9 35.6
Dane Madison East ppb 41.9 39.1 36.1 33.3 30.5 27.8 25.9 25.1 25.9 27.9 30.6 33.9 37.3 40.9 43.9 45.8 46.3 45.8 44.3 41.5 39.5 37.5 35.9 34.3
Dodge Horicon Wildlife Area ppb 46.9 43.5 40.3 37.3 34.1 30.8 28.2 26.9 27.2 28.9 31.5 35.5 40 44.6 47.7 49.8 50.9 51.2 50.4 48.1 45.2 42 39.6 37.2
Door Newport Park ppb 78.8 82.5 84.9 83.6 78.5 72.1 66.3 60.6 55 50.1 46.4 43.7 43.5 45.3 47.5 50.4 55.1 61.4 65.3 65.5 64.6 62.9 60 56.2
Eau Claire Eau Claire DOT Sign Shop ppb 41.1 39.3 37.5 35.6 34.3 33.6 33.3 31.9 30.5 28.9 27 25 24.3 24.1 24.4 26.5 28.9 31.5 34.2 36.5 36.7 35.8 35.4 34.6
Fond du Lac Fond Du Lac ppb 45.7 43 40.1 37.3 34.7 31.9 29.6 28.4 28.5 29.8 32.1 35.1 38.9 43.1 46.3 48.2 49.3 49.3 48.9 47.9 45.8 43 40.5 38.4
Forest Potawatomi ppb 38.5 38.4 37.9 37.5 37.5 36.9 36.8 35.3 34.2 33.6 33.8 34.6 35.3 37.4 38.7 40 40.2 40.2 39.6 39 37.9 36.4 35.1 35
Jefferson Jefferson-Laatsch ppb 41.6 38.8 36.1 33.3 30.6 27.6 25.2 24.5 25.1 27 30 33.8 37.4 40.8 43.8 45.8 47.3 47.9 47.1 45.5 44 42.3 40.4 38.3
Kenosha Chiwaukee Prairie ppb 52.8 49.9 47 44.4 41.8 39.1 36.8 34.6 33.1 33 34 36.6 40.5 45.4 50.7 55 57.4 58.3 58.4 57.8 56.9 54.7 51.4 48.4
Kenosha Kenosha-Water Tower ppb 51.7 49.2 46.6 44.1 41.5 38.3 35 32.2 30.8 30.5 31.7 33.8 36.7 40 43.1 46 47.5 48.1 48.5 48.8 49.2 48.6 48.4 46
Kewaunee Kewaunee ppb 77.4 69.9 62.6 55.5 50.8 43.3 37.6 35 34.6 35.5 37.2 39.3 40.9 44.4 48.3 52.7 58.1 61.4 61.7 61.1 59.7 57.6 54.7 50.4
La Crosse La Crosse DOT ppb 38.2 37.2 35.4 33.4 33.8 34.4 34.8 35.5 35.8 36.1 37.9 40.3 40.2 39.5 38.7 37.7 37.9 38.1 38 37.4 36.4 33.2 30.8 29.6
Manitowoc Manitowoc ppb 82.6 76.7 70.8 64.9 58.5 51.7 46.3 42.3 39.3 38.5 38.8 39.9 42.4 46.2 50.1 55.8 62 65.9 67.8 66.8 64.9 62.1 58.4 52.3
Marathon Lake Dubay ppb 47.7 45.6 44 43.2 41.3 39.1 36.9 35.1 34 34 34.5 34.1 34.8 36.2 37.7 39.6 40.4 40 39.3 38.3 37.3 36.7 35.3 33.3
Milwaukee Bayside ppb 50.9 47.9 44.6 41 37.6 34.5 31.7 30 29.8 31 33.6 36.6 40.2 44.5 48.9 53.6 57.3 57.9 56.8 55.9 54.5 52.2 48.6 43.5
Milwaukee Milwaukee-16th St. Health Center ppb 46.7 44.2 40.9 38 35.3 32.7 30.5 28.6 27.9 28.9 31.1 34 37.3 40.7 43.5 45.7 46.9 46.9 46.5 46.1 44.9 43 41.2 38.9
Milwaukee Milwaukee-UWM UPark ppb 49.8 47 43.4 40 36.9 34.1 31.4 29.5 29.3 30.7 33.3 36.5 40.2 43.9 47.5 51.2 54 54 53 52.3 51.1 49.4 46.8 42.9
Outagamie Appleton ppb 49.8 46.5 43 40 37.1 34.1 31.8 30.2 29.9 31.1 33.7 36.7 40.8 45.9 50.8 54.8 56.6 56.7 55.3 53.5 51.1 47.4 42.9 38.6
Ozaukee Grafton ppb 51.5 47.7 44.5 41.2 37.6 34.3 31.3 29.5 29 30.2 32.9 36.5 40.5 44.4 48.4 52.7 56.4 57.8 57 55.5 53.5 51.9 49.2 44.7
Ozaukee Harrington Beach Park ppb 56.8 50.7 45.3 40.3 35.8 33.2 30.5 29 28.8 29.8 31.7 35.3 40.2 45 51.4 57.2 61.6 64.9 66.4 64.8 62.5 60.2 55.2 49.6
Racine Racine-Payne & Dolan ppb 51.4 48.6 45.8 43.3 40.7 37.9 34.9 32.8 31.4 32.1 34 36.7 41 45.5 50.7 52.3 55.3 56 55.7 55.4 54.8 53.5 49.8 45.6
Rock Beloit-Converse ppb 43.3 40.4 37.1 33.5 29.8 26.3 23.7 23 23.8 25.7 28.2 31.1 34.1 37.6 40.7 43.1 44.5 44.9 44.4 43.1 42 39.8 38.1 35.8
Sauk Devils Lake ppb 45.4 42.5 39.6 36.8 34.2 31.8 30.1 29.2 29.2 29.9 32 34.7 37.6 40.3 42.7 44.4 45.2 45.2 43.3 40.5 37.7 35.5 33.8 31.4
Sheboygan Sheboygan-Haven ppb 54.7 48.6 44 39.8 36.8 34.7 32.6 31.4 31.2 31.9 33.4 36 40.2 45 49.4 53.8 57.4 60.6 61.8 61.1 59.1 56.3 53.1 48.8
Sheboygan Sheboygan-Kohler Andrae ppb 70.2 64.3 58.7 53 47.4 41.3 36.6 34.2 33.6 33.4 34.4 36.6 39.3 43.7 48.4 54.2 58.4 62.1 64.1 62.3 59.9 57.1 52.8 46.5
Vilas Trout Lake ppb 33.1 30.2 27.2 23.3 20.9 19.6 19.3 19.3 18.6 20.5 23.6 28.3 32.1 34.9 35.9 35.6 36.4 36.9 37.2 36.5 35.3 34.7 35.1 36.1
Walworth Elkhorn ppb 45.2 41.9 38 34.5 31.1 28 25.5 24.1 24.4 26.3 29.2 32.7 36.2 39.5 42.5 44.9 45.6 46 46.6 46.8 45.8 44.2 42 39.6
Waukesha Waukesha-Cleveland Ave. ppb 44.7 42.2 39.1 35.9 32.8 29.8 27.1 25.6 25.6 27 29.6 32.7 36.2 39.6 42.5 44.7 46.1 46.1 45.9 45.6 44.4 42.5 40.6 38.4