-
Noise monitoring program
Active Air Quality Notification
  • An air quality ADVISORY for Unhealthy PM2.5 levels is in effect from 8/2/2025 12:00 to 8/3/2025 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,Iowa,Green Lake,Iron,Jackson,Jefferson,Juneau,Kenosha,Kewaunee,La Crosse,Langlade,Lafayette,Lincoln,Manitowoc,Marathon,Marinette,Marquette,Menominee,Milwaukee,Monroe,Oconto,Oneida,Outagamie,Ozaukee,Pepin,Pierce,Polk,Portage,Price,Racine,Richland,Rock,Rusk,Sawyer,Sauk,Shawano,Sheboygan,St. Croix,Taylor,Trempealeau,Vernon,Vilas,Walworth,Washburn,Washington,Waukesha,Waupaca,Waushara,Winnebago,Wood .

8-HR Ozone Summary

Filter by County:
Filter by Site:
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 28 28.3 28.7 29.8 31.9 32.5 32.8 33 33.2 32.6 32.4 32.8 33.2 34.3 35.7 37.3 38.8 40.6 42.5 43.7 44.6 44.8 43 41.6
Brown Green Bay UW ppb 37.2 33.9 31.7 30.3 28.6 27.8 28.2 29.7 31.5 34 36.6 38.6 40.8 42.2 42.9 42.8 42.1 41.5 41.1 40.8 40.4 39.9 39.5 39.2
Columbia Columbus ppb 34.2 32.1 30 28.4 27.8 27.7 27.6 28.1 29.9 33.2 37.2 41.1 44.1 46.9 48.8 50 50.3 50 49 47.8 46.7 45.5 44 42.3
Dane Madison East ppb 32.4 30.2 28.2 27.5 26.9 25.8 25.5 26.2 28.2 31.5 36 40.2 43.2 46.1 48.3 49.6 50.6 50.8 50.1 49.3 48.6 47.6 46 44.4
Dodge Horicon Wildlife Area ppb 34.5 31.5 29.3 28 26.5 25.5 25.4 26.4 28.8 32.5 36.6 39.2 43 46.1 48.6 50 50.6 50.4 49.5 47.9 46.4 45.2 43.7 42
Door Newport Park ppb 50.9 43.1 37.2 34.7 32.7 31.4 32 33.8 36 38.6 41.7 43.6 45.3 46.3 46 45.1 44.3 43.5 42.1 41.2 40.5 40.2 40.3 40.3
Eau Claire Eau Claire DOT Sign Shop ppb 33.5 32.4 31.4 31.7 32.9 34.5 35.7 35.9 35.8 35.9 36.3 36.7 37.1 37.6 38.3 38.7 39.4 39.9 40.3 40.1 39.2 38.1 37 35.5
Fond du Lac Fond Du Lac ppb 36.1 34.2 32 30.2 29.1 28.7 29.1 30.1 31.9 34.7 38.1 41.2 44 46.3 48 49 49.3 48.8 47.6 46.2 44.8 43.4 41.9 40.3
Forest Potawatomi ppb 35.1 35.1 35.3 35.3 35.6 35.6 35.7 35.6 35.9 36.4 36.5 36.1 35.5 35.3 35.7 36 36.3 36.8 37.4 38.3 38.9 39.4 39.8 40.3
Jefferson Jefferson-Laatsch ppb 35.4 32.5 30.2 28.4 27.2 26.6 26.5 27.1 28.8 31.7 35.5 39.7 43.8 47.1 49.8 51.9 53.3 53.8 53.3 52 50.1 47.9 45.4 42.7
Kenosha Chiwaukee Prairie ppb 46.3 44 41.3 38.4 35.3 32.7 30.3 29.3 29.9 32.7 37.1 41.4 46.1 51.4 56.5 60 62.3 62.7 62 60.5 58.3 55.5 52.1 48.8
Kenosha Kenosha-Water Tower ppb 43 39.8 36.5 32.4 28 24.7 24.6 24.3 26.2 29.6 33.9 38.9 44.3 50.2 55 58.5 60.2 60.7 59.9 57.9 55.3 51.7 48 44
Kewaunee Kewaunee ppb 44 38.7 35.6 33.2 31.4 30.2 30.3 31.5 33.8 36.4 37.7 39.8
La Crosse La Crosse DOT ppb 27.1 24.7 22.8 21.6 21.1 24.1 26.8 28.6 30.9 32.8 34.3 35.8 37.4 38.5 39.5 40.8 42.3 43.4 44 43.9 43.2 42 40.1 36.9
Manitowoc Manitowoc ppb 44.9 38.6 33.5 31.1 28.9 27.3 26.8 28.2 30.3 33.2 34.4 36.1 39.1 38.3
Marathon Lake Dubay ppb 31.6 30.5 29.4 28.7 28.5 27.9 28.4 29.5 31 32.6 33.8 34.9 35.9 36.9 37.6 38.4 39.1 39.6 40.2 40.7 41 41 40.5 39.5
Milwaukee Bayside ppb 38.2 35 32.4 29.5 28 25.3 24.2 24.8 27.5 31.3 36.3 42.1 44.6 50 54.2 56.6 57.4 57 55.7 53.7 51.3 48.5 45.5 43
Milwaukee Milwaukee-16th St. Health Center ppb 36.5 34.5 32.1 29 26.6 25.4 24.9 25.8 27.8 30.8 35 39.9 45.2 49.8 53.7 55.7 56.5 56.2 55 53.1 50.8 48.5 46 44.1
Milwaukee Milwaukee-UWM UPark ppb 38.6 36.3 34.1 31.1 28.4 26.5 26.1 27 29.2 32.4 36.5 41.5 47 52 55.8 57.9 58.7 58.4 57.2 55.5 53.1 50.5 47.8 45.8
Outagamie Appleton ppb 35.6 33.4 31.5 29.8 28.1 27.5 28.2 29.9 32.2 34.4 36.5 38.4 40.4 42.1 43 43.2 42.7 42 41.7 41.5 40.9 40.4 40.1 39.3
Ozaukee Grafton ppb 40 36.6 34.2 31.5 29.8 27.7 26.9 27.8 29.6 32.2 36 40.4 44.9 49.4 52.5 54.2 54.8 54.4 53.4 51.4 48.5 45.8 43.5 41.5
Ozaukee Harrington Beach Park ppb 44 38.8 34.6 32.3 30.2 28.2 27.5 28 29.9 32.8 36.3 40.3 44.8 48.8 51.5 53.1 53.6 53 51.8 50.1 47.7 45.2 43.4 41.3
Racine Racine-Payne & Dolan ppb 41.7 38.5 35.5 32.4 29.1 26.6 25.8 26.1 27.7 31.1 35.6 40.6 45.7 50.9 55.6 59.1 60.6 60.8 59.8 58 55.6 52.5 49.3 46.2
Rock Beloit-Converse ppb 33 30.4 27.6 26.2 24 22.8 22 22.2 23.9 26.8 31.4 36 41.5 46.8 51.2 54.1 55.9 56.5 56.1 54.7 51.9 47.6 43.9 40.4
Sauk Devils Lake ppb 28 25.6 24.1 24.1 24.9 26.1 26 27.1 30.3 33.4 36.8 39 40.5 41.5 43.3 45.1 46.3 46.9 47.1 47.4 46.9 44.2 43 41.8
Sheboygan Sheboygan-Haven ppb 44.1 39.4 36 33.7 31.6 29.9 29.7 30.5 32.4 35 38.5 42.2 45.8 48.5 50.3 51.2 50.9 50 48.4 46.5 44.7 43 41.2 39.6
Sheboygan Sheboygan-Kohler Andrae ppb 40.4 34.6 29.5 27.2 25.5 24 23.4 24.1 26.5 29.7 33.4 37.5 41.6 45.3 47.8 49.1 49.3 48.5 47.4 45.4 43.1 41 38.9 36
Vilas Trout Lake ppb 36.6 36.3 35.6 35.6 35.7 35.8 35.9 35.8 36 35.7 34.9 34.1 33.7 33.9 34.8 36.1 37.2 38.2 39.6 39.9 40.6 40.9 40.7 40.2
Walworth Elkhorn ppb 38.1 36.1 33 30.1 29 28.1 28.1 29.4 31.6 34.8 39.1 44 46.4 50.8 54.7 57 58 58.1 57.5 56 53.8 51.5 48.6 46.7
Waukesha Waukesha-Cleveland Ave. ppb 36 33.8 30.7 28.6 27.1 24.7 23.8 24.6 26.7 30.8 37 40.3 42.9 48.2 52.4 54.8 56.3 56.4 55.6 54.1 52.1 49.9 47.7 45.6