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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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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 39.7 38.5 37.4 36.4 35.3 34.8 34.5 33.8 32.7 31.2 30 29.2 29 29.5 30.6 32 33.7 35.6 37.3 38.4 38.1 36.8 34.8 32.8
Brown Green Bay UW ppb 41.5 39.4 38 37.1 36.3 35.7 35.5 35.6 36.8 38.7 39.4 40.1 40.6 41.3 41.4 41.2 40.7 39.7 40 40.2 39.9 38.8 36 33.9
Columbia Columbus ppb 41 39.2 37.7 37.8 36.5 35.4 35.9 37.2 39 40.3 42 43.8 46.5 49.4 51.4 52.9 54.2 55.2 55.3 54.7 53.9 52.8 51.9 50.6
Dane Madison East ppb 40.6 38.8 36.9 35.8 35.8 36.6 38.3 39.3 40.3 41.5 43 44.8 46.8 48.7 50 51.6 53.1 54.3 55 54.7 53.3 52.1 50.4 47.2
Dodge Horicon Wildlife Area ppb 44.2 41.1 38.8 36.7 34.8 33.6 33.5 34.4 36.3 38.8 41.3 44.3 47.4 50.4 52.8 54.4 55.5 56.1 56.1 54.9 53.5 51.4 49.1 46.7
Door Newport Park ppb 43.1 42.1 40.6 39 38.2 36.3 35.1 34.8 36.3 38 39.7 39.9 38.5 37.9 37.5 36.9 35.8 34.8 34.1 32.9 31.6 30.1 27.5 26.3
Eau Claire Eau Claire DOT Sign Shop ppb 40.5 38.1 36.1 33.9 32.1 31.2 31.8 33.5 34.2 33.8 33.4 33.9 34.9 36.5 38.2 40.1 42.3 44.3 45.7 45.9 44.3 39.9 34.9 29.6
Fond du Lac Fond Du Lac ppb 42.8 41.8 41 40.4 39.6 40 40.7 41.7 42.7 43.2 44.1 45.5 47.8 50.1 51.8 53.3 54.4 55 54.9 53.5 51.2 48.2 45.9 43.1
Forest Potawatomi ppb 45.4 44.5 43.4 42.7 42.1 41.4 40.5 40.2 39.2 37.9 36.9 36 35.2 34.8 34.8 35.3 35.5 36.2
Jefferson Jefferson-Laatsch ppb 41.5 39.3 36.9 34.7 32.6 31.4 32.6 34.2 35.3 36.9 39.3 42.3 46 49.9 51.9 53.1 54.2 55.1 55.6 55.1 53.5 51.4 48.6 44.7
Kenosha Chiwaukee Prairie ppb 44.8 41.6 39.7 38.2 36.3 34.6 34.3 36 39.1 42.2 44.6 46.7 49.5 52.7 55.9 58.3 59.3 59.4 59.3 58.9 57.2 54.4 50.4 46.6
Kenosha Kenosha-Water Tower ppb 40.9 37.9 35.7 33.6 31.4 29.7 29.4 31.1 34.4 37.7 40.4 43.3 47.1 50.9 54.3 56.7 57.4 57.5 57.2 56.6 55.8 54.3 52.2 49.8
Kewaunee Kewaunee ppb 46.9 45 42.4 40.6 39.4 38.2 37.8 38.1 39 40.8 42.9 43.8 44.4 45.2 45.7 45.6 44.3 42.4 40.3 39.4 38.3 36.7 35.4 33.5
La Crosse La Crosse DOT ppb 36.4 33.3 30.2 27.3 25.8 24.9 25.4 27 28.8 31.2 34.5 38.7 42.8 47.6 50.9 52.8 54.4 55.5 56.3 56.5 54.9 53.2 50.8 47.8
Manitowoc Manitowoc ppb 46.3 42.9 40.8 39.7 36.7 33.7 33.4 34.9 36.4 38.8 41.3 43.9 45.8 47.7 48.6 49.2 48.8 47.2 45.1 42.5 40 37 33.5 29.7
Marathon Lake Dubay ppb 45.8 44.7 43.6 42.8 42.3 42 41.7 41.5 40.6 39.8 38.9 37.8 37.2 36.8 36.8 37.4 38.5 40 41.4 42.6 43.4 43.7 43.5 42.5
Milwaukee Bayside ppb 39.4 36.3 33.9 31.4 29.6 30 31.6 33.9 37 39.7 42.1 43.6 46.9 50.1 52.9 54.3 55.2 55.9 55.9 54.4 52 48 43.2 37.8
Milwaukee Milwaukee-16th St. Health Center ppb 38.3 36 34.1 33.5 33.4 33.6 33.9 35.5 37.2 39 40.9 42.9 45.8 48.9 51.4 52.4 52.9 53.3 53.3 51.8 49.5 47 44 39
Milwaukee Milwaukee-UWM UPark ppb 41.6 38.7 36.3 35.1 34.1 34.4 35.3 37 38.7 40.9 43 45.2 48.2 51.4 53.7 54.9 55.6 56.1 56.2 55.1 53.2 50.2 46.7 42.2
Outagamie Appleton ppb 37 35.7 34.4 34.8 36.3 37.8 38.3 38.7 39.7 41.2 42.4 42.7 43.4 43.9 44.4 44.6 44.9 44.3 44.1 43.8 43.1 42.4 41 39.3
Ozaukee Grafton ppb 38.8 37.1 35.4 35.4 36.5 36.4 36.9 37.9 38.8 39.8 41.5 44.1 47.2 50.2 52.5 54.1 55.3 56.1 55.7 54.1 50.8 46.7 42.2 37.7
Ozaukee Harrington Beach Park ppb 47.1 44.7 42.7 41 39.5 38.6 38.8 39.6 40.5 41.6 42.7 44.6 47.4 50.3 53.1 54.6 55.7 55.9 54.9 53.1 50.5 46.8 42.9 39.4
Racine Racine-Payne & Dolan ppb 46.7 44.2 41.8 39.8 37.6 35.9 34.8 35.4 37.8 40.4 42.9 45.5 48.5 51.3 54 56.1 56.7 56.8 56.5 56.3 55.5 53.8 51 48.4
Rock Beloit-Converse ppb 32.9 30.8 28.7 27.4 26.2 25.7 26.9 29.4 31.2 33.2 35.6 38.8 43.7 48.4 51.8 54 54.7 55.1 55.1 54.1 51.6 48.2 44.3 40.4
Sauk Devils Lake ppb 38.7 35.8 33.6 32.9 32.5 32 33.1 34 35.7 38 40.6 43.5 46.6 49.7 51.7 53.8 55.1 56.2 56.9 56.7 55.3 53.2 50.7 47.8
Sheboygan Sheboygan-Haven ppb 38.9 36.8 35.5 34.3 34 34.2 36.3 38.5 40.1 41.5 43 45 47.1 48.8 50 50.8 51.4 51.7 50.4 48.3 45.4 42.2 39.2 36.1
Sheboygan Sheboygan-Kohler Andrae ppb 48.5 45.3 42.2 39.1 35.8 33 32.3 33.7 36.1 37.8 39.6 41.9 45.5 48.9 51.1 52.2 53 53.1 52.3 50.4 47.1 42.7 38.6 34.6
Vilas Trout Lake ppb 40.9 38.9 36.4 34.5 34.1 34 33.8 33.9 33.5 32.9 33.1 33 32.5 32.5 33.1 34.1 35.3 36.7 37.7 38.3 37.9 36.4 33.9 30.9
Walworth Elkhorn ppb 44.2 41.7 39.1 37.2 35.7 34.4 33.3 33 34.7 37.1 40.1 43.1 46.8 50.1 53.2 55.4 56 56.1 56.1 55.4 54.2 53 51.9 50.8
Waukesha Waukesha-Cleveland Ave. ppb 37.7 33.7 30.7 28.4 27.8 26.4 27.8 29.7 33.1 36.9 40.2 43.9 45.4 49.1 52.3 53.9 54.8 55.5 55.8 55.6 54.4 52 48.8 44.2