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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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Friday, 
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 44.6 42.6 40.6 38.7 36.2 33.6 32.8 32.3 32.1 32.7 33.6 34.9 37 39.5 40.6 41.7 42.5 43.3 44 44.3 44.2 44.1 45.5 46.8
Brown Green Bay UW ppb 43.9 43 41.8 40.4 39.6 38.7 37.9 37.5 37.5 38.3 39.6 41.3 42.8 44.9 47.1 49.2 50.8 51.7 52 51.8 51.5 50.8 49.7 48.3
Columbia Columbus ppb 28.7 28 27.5 27.3 27.1 27.4 27.7 27.9 28.6 29.6 31.4 33.7 36.6 39.5 42.7 45.5 47.6 49.3 50.3 50.1 49.4 48.6 47.6 46.7
Dane Madison East ppb 26.3 25.7 25.5 25.5 25.4 25.2 25.1 25.4 26.2 27.4 28.9 30.9 33.6 36.7 39.8 42.5 44.9 46.9 48.4 49.2 49.3 49 48.5 48
Dodge Horicon Wildlife Area ppb 36.3 36.5 36.8 37.1 36.8 36.4 36.1 36 36.1 36.6 37.4 38.7 40.6 42.6 44.8 47 49.2 51.1 52.7 53.7 54.3 54.3 54 53.3
Door Newport Park ppb 47.7 47.2 46.7 46.3 45.9 45.4 45 44.9 45 45.4 46.1 47 48 48.9 49.8 51 52.1 52.8 52.9 52.6 52.2 51.7 51.3 50.7
Eau Claire Eau Claire DOT Sign Shop ppb 36.2 34.6 32.8 31.3 30.2 29.4 29 28.8 28.8 28.8 29.4 30.8 33.2 36.4 39.9 43.3 46.9 50.6 53.9 56.1 57.1 57 56.4 55.6
Fond du Lac Fond Du Lac ppb 39.7 39.6 39.5 39.2 38.6 38.3 38.2 38.5 38.8 39.4 40.4 41.9 43.6 45.3 46.9 48.6 50.3 51.8 52.9 53.4 53.1 52.6 51.6 50.5
Jefferson Jefferson-Laatsch ppb 29.7 29.8 29.9 29.9 30.3 30.6 30.9 31.2 31.7 32.5 33.8 35.6 37.8 40.3 42.8 45.1 47.5 49.5 50.8 51.4 51.3 50.9 50.7 50
Kenosha Chiwaukee Prairie ppb 34.4 35.1 35.6 36.2 36.6 36.9 37.1 37.6 38.3 38.9 39.8 40.9 42.1 43.8 45.9 47.8 49.6 51.4 53 54.1 55 55.4 54.9 54
Kenosha Kenosha-Water Tower ppb 31.1 31.7 32.6 33.4 34 33.2 31.7 31.4 31.7 32.4 33.2 34.1 35.3 37.5 40.7 43.2 45.3 46.9 48.6 50.1 51.2 52.2 52.3 51.7
Kewaunee Kewaunee ppb 49.2 48.9 48.3 47.3 46.6 45.8 44.9 44.1 43.1 42.4 42.3 42.8 43.5 44.7 46.1 47.7 49.3 50.7 51.9 52.9 53.6 53.8 53.9 53.8
La Crosse La Crosse DOT ppb 27.7 26.7 25.9 25.5 24.8 24.4 24 24 24.4 25 26 27.4 29.3 31.4 33.8 36.3 38.8 40.8 42.5 43.6 44.7 45.5 46 46.1
Manitowoc Manitowoc ppb 48.2 48 47.4 46.7 45.9 45 44.1 43.1 41.9 41 40.7 40.9 41.8 43.4 45.4 47.5 49.3 51.2 52.7 53.7 54.3 54.2 53.5 52.7
Marathon Lake Dubay ppb 40.7 40 39.8 39.7 39.3 39 38.7 38.5 38.3 38.4 39 40.5 42.4 44.6 47.3 50.1 52.6 54.8 56 56.5 56.6 56.2 55.3 54
Milwaukee Bayside ppb 43.5 43.3 42.1 40.7 39.9 39.3 39 39.1 39.6 40.6 42 43.6 44.7 45.5 45.9 47 48.2 49.5 50.9 51.9 52.7 53.1 53.2 52.5
Milwaukee Milwaukee-16th St. Health Center ppb 35.2 35.9 35.8 35 33.9 33 32.3 32.3 32.9 33.6 34.8 36.3 37.9 39.4 40.7 41.8 42.8 43.7 43.7 44 44.4 44.7 44.8 44.8
Milwaukee Milwaukee-UWM UPark ppb 42.2 42 40.9 39.4 38.5 37.8 37.3 37 37.4 38.3 39.9 41.4 42.8 44.1 45.5 47 48.6 50.2 51.4 52.7 53.4 53.7 53.3 52.5
Outagamie Appleton ppb 41.8 40.8 40 39.4 38.3 37.1 36.4 36.6 37.3 38.2 39.6 41.6 44 46.7 49 51.2 53.2 54.7 55.3 55.1 54.2 53.1 51.4 49.7
Ozaukee Grafton ppb 46 45.7 45 44.2 43 42.1 41.6 41.4 41.5 42.1 43 44 45.4 46.8 48.1 49.3 50.5 51.9 53.1 53.8 54.2 54 53.2 52.2
Ozaukee Harrington Beach Park ppb 46.3 46.2 45.9 45.2 44.3 43.4 42.7 42.3 42 42.1 42.6 43.5 44.7 46 47.5 48.9 50.2 51.3 51.9 52.4 52.7 52.6 52.3 51.7
Racine Racine-Payne & Dolan ppb 35.5 36 36.4 36.4 36.7 36.9 37.2 37.8 38.4 39.1 39.9 41.2 42.4 43.8 45.4 47.1 48.8 50.6 52.1 53.4 54.2 54.2 53.9 53.2
Rock Beloit-Converse ppb 24.2 23.7 23.3 23 22.8 22.7 22.7 23 23.5 24.2 25.3 27.3 30.1 32.6 34.7 36.5 39 41.4 43.3 44.5 44.6 44.9 45.4 45.7
Sauk Devils Lake ppb 29.3 28.7 28.2 28 27.9 27.9 28.1 28.5 29.1 30.1 31.6 33.6 36.5 39.7 43.1 46.2 49.1 51.3 52.6 53.2 53 52.3 51.5 50.6
Sheboygan Sheboygan-Haven ppb 45.2 44.7 43.6 42.6 41.6 40.5 39.7 39.4 39.7 40 41.1 42.2 43.6 45.7 47.7 49.3 50.4 51.2 51.5 51.6 51.8 51.4 50.9 50.5
Sheboygan Sheboygan-Kohler Andrae ppb 46 45.6 44.8 43.9 42.9 41.8 40.6 39.5 39 38.8 39.1 39.8 40.8 42.3 44.3 46.2 47.7 49.2 50.6 51.5 52.1 52 51.4 50.9
Vilas Trout Lake ppb 46.7 46.1 45.5 45 44.6 44.1 43.6 43.1 42.8 43.2 44 44.9 46 47.3 49 50.8 52.4 53.7 54.7 55.3 55.7 56 55.8 55.2
Walworth Elkhorn ppb 25.8 25.5 25.4 25.4 25.8 26.4 27 27.7 28.7 30.1 31.6 33.4 35.4 37.5 39.9 42.4 44.5 46.1 47.2 47.8 48.1 48.1 47.6 46.7
Waukesha Waukesha-Cleveland Ave. ppb 31.4 31.6 31.7 32 31.9 30.9 30.2 29.8 30 30.9 32.5 34.2 36.4 39.2 42 44.7 47.2 48.7 49.8 50.7 51 51.1 50.8 50.1