-
Noise monitoring program
Active Air Quality Notification
  • An air quality ADVISORY for Unhealthy for Sensitive Groups PM2.5 levels is in effect from 8/5/2025 12:00 to 8/6/2025 12:00 for these counties: Ashland,Bayfield,Brown,Calumet,Dodge,Door,Douglas,Florence,Fond du Lac,Forest,Green Lake,Iron,Kenosha,Kewaunee,Langlade,Lincoln,Manitowoc,Marathon,Marinette,Marquette,Menominee,Milwaukee,Oconto,Oneida,Outagamie,Ozaukee,Portage,Racine,Shawano,Sheboygan,Vilas,Washington,Waukesha,Waupaca,Waushara,Winnebago .

8-HR Ozone Summary

Filter by County:
Filter by Site:
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 41.2 42.3 42.4 42.6 42.5 42.3 42.2 42.1 42.4 42.1 42.1 41.7 41.1 40.6 40.1 39.5 38.5 37.3 35.9 34.7 33.8 32.7 31 29
Brown Green Bay UW ppb 47.4 47.2 46.7 45.7 43.9 41.5 38.5 35.4 33.5 32.3 31.8 31.9 33.5 36.1 39.8 43.4 44.2 43.2 42 41.3 39.9 38.7 37.4 35.7
Columbia Columbus ppb 44.8 43.6 42.1 40.6 39.6 38.6 37.6 36.4 35.3 35 35.7 36.1 35.9 35.4 35.3 35.2 34.9 34.1 32.2 31 30.1 29.3 29 29.5
Dane Madison East ppb 44.3 43.2 41.8 40.1 38.8 37.4 35.7 33.4 32.9 33.1 33 32.8 32.9 32.9 33.2 33.2 31.8 29.9 28.8 28.2 27 26 25.8 26.9
Dodge Horicon Wildlife Area ppb 44.9 43.6 41.3 39.4 37.8 36.4 35.2 33.7 32.4 32.7 34.1 35.2 36.2 36.1 36.1 36.2 35.9 34.4 32.6 30.4 28.3 28.1 27.7 27.8
Door Newport Park ppb 51.5 50.7 49.9 49.3 48.4 47.5 46.6 45.5 44.6 44.1 43.6 43.2 43.5 44.3 45 46 46.7 46.9 46.9 46.6 45.9 44.4 42.8 41.1
Eau Claire Eau Claire DOT Sign Shop ppb 36.3 34.8 34.4 32.9 30.4 26.9 25.1 22.4 20.2 19.6 20.3 21.5 22.4 23.9 24 25.3 26.9 28.1 28.3 28.3 28 27.8 27.5 26.7
Fond du Lac Fond Du Lac ppb 43.1 41.3 39.5 37.8 36.3 34.3 32.2 30.5 29.5 29.2 30.3 31.1 31.4 32.4 33.7 34.3 34.3 33.8 32 30 28.2 26.9 26.5 26.8
Forest Potawatomi ppb 42.4 42.1 41.6 40.9 40.6 40.4 39.7 38.3 37.2 36.3 35.7 35.1 34.2 33.1 32.6 33.2 33.8 34.8 35.9 36.8 37.6 38.6 38.9 37.8
Jefferson Jefferson-Laatsch ppb 43 42.1 41.1 39.9 38.9 37.9 36 34.1 32.7 31.5 30.7 31.1 32 32.4 33.4 33.9 33.1 32.2 31.4 30 27.4 25.7 24.2 23.8
Kenosha Chiwaukee Prairie ppb 47.4 47.1 46.8 46.2 45.2 44 43 42.5 41.9 41.2 40.5 40.4 40.5 40.7 40.8 40.9 40.8 40.7 40.2 39.6 38.4 37.3 35.8 33.9
Kenosha Kenosha-Water Tower ppb 47.9 47.8 47.6 46.9 44.9 42.8 39.2 36.1 33.2 30.9 29.9 29.8 31.3 33 35.6 37.3 39.5 40.8 40.8 40.1 38.8 37.4 36.6 35.4
Kewaunee Kewaunee ppb 50.7 50.2 49.7 49.3 48 47.2 46.2 45.2 44.6 44.2 43.6 42.9 43.5 43.8 44.2 44.5 44 43 42.8 43.1 43.1 42.8 42.3 41.3
La Crosse La Crosse DOT ppb 41.6 39.3 37.1 35.2 34.2 33.3 32.4 31.8 30.8 30.7 30.5 30.3 29 28 27.7 27.1 27.1 26.6 26.2 26.5 27.6 28.5 29 29.7
Manitowoc Manitowoc ppb 47.2 45.7 44 43.5 41.8 39.8 37.6 36.3 35.4 35.9 36.2 35.1 35.5 36.3 37.6 38.7 39 37.8 35.6 33.5 33.3 33.6 33.5 32.8
Marathon Lake Dubay ppb 45.3 44.9 44.2 43.5 42.6 40.9 38.9 37.7 36.6 35.3 34.2 33.8 34 34.1 34.6 33.9 33.4 33.8 34.3 34.7 35 35.2 35.1 35.1
Milwaukee Bayside ppb 47.4 46.6 45.6 43.9 42.4 40.7 38.1 36.4 35.4 34.9 34.6 34.9 35.6 36.5 38.9 40.5 42.7 44.5 45 45.1 44.3 42.5 39.7 39.5
Milwaukee Milwaukee-16th St. Health Center ppb 37 37.5 37.4 36.2 34.4 31.3 27.4 25.7 23.9 21.9 20.5 20.6 21.9 24.7 28.1 29.4 30.3 32 32.8 32.6 30.9 28.3 26.2 25.6
Milwaukee Milwaukee-UWM UPark ppb 43.8 43.3 42.7 41.9 40.3 38.6 35.1 33.3 32.3 31.5 30.7 30.2 31 32.2 34.9 36.2 38.6 40.5 41.6 42.7 42.8 41.7 39.7 39.7
Outagamie Appleton ppb 43 42.4 41.6 41 39.5 37.1 34 31.6 31.1 31 30.6 30.1 31.1 33.2 36.7 39.4 39.8 39.2 38.2 37.2 36.5 35.3 34.4 34
Ozaukee Grafton ppb 46.7 45.4 43.7 41.4 39.4 37.4 34.6 32.2 30.7 30.2 30.4 31.6 32.8 33.8 35.3 36.8 38.7 40 39.8 38.4 36.9 34.3 31.9 32.3
Ozaukee Harrington Beach Park ppb 50 48.8 46.7 44 42.3 40.7 38.4 36 34.3 33.5 34.1 35.8 36.7 37.8 39.3 40.6 42.2 43.6 43.3 41.2 39.3 36.5 35.9 36.2
Racine Racine-Payne & Dolan ppb 47.8 46.6 45.9 45.2 43.3 40.9 38.1 35.5 33.9 33.4 32.6 32.5 33.6 35.5 37.4 39.1 39.4 38.5 38.1 37.3 35.9 33.9 32.7 31.4
Rock Beloit-Converse ppb 43.7 43.4 42.9 41.5 37.8 34 30.9 28.5 25.6 24 23.5 24.6 28.2 32.1 33.8 34.7 35.8 36.3 35.7 34.1 32.1 29.4 27.8 26.6
Sauk Devils Lake ppb 42.6 41 39.4 38.2 37.6 36.9 37 36.6 36.1 36.5 38.2 40.1 40 39.9 39.1 38.9 38.5 37.4 35.4 32.4 31.1 30.9 30.9 31
Sheboygan Sheboygan-Haven ppb 49.5 48.8 47.6 45.9 43.8 41 38.5 36 34.3 33.5 33.2 33.7 34.7 36.6 38.3 40 40.8 40.7 39.8 38.1 36.3 35.8 35.9 35.5
Sheboygan Sheboygan-Kohler Andrae ppb 51.5 50.5 48.9 47.1 45.6 44.2 41.2 38.2 36 34.9 34.7 35.4 36.6 37.5 38.7 40.7 42.3 42.9 43.4 41.5 39.3 37.6 38.5 38.3
Vilas Trout Lake ppb 40.6 40.1 40.1 40.6 39.9 39.4 37.8 36.3 34.9 34.1 33.4 33.1 33.7 34.3 35.3 35.9 36.1 35.8 35.4 34.6 33.4 31.6 30 28.3
Walworth Elkhorn ppb 44.1 44 44 43.6 43 41.9 40.3 38.5 36.2 33.8 32.7 32.6 33.5 34.6 35.8 36.9 38 38.4 38.2 37.5 35.9 33.8 31.6 29.4
Waukesha Waukesha-Cleveland Ave. ppb 43.2 43.5 43.5 43.1 41.3 39.5 36.9 35.1 33.9 32.5 31.3 31.2 32.9 34.8 37.1 38.2 38.4 38.2 37.8 37.1 35.6 32.7 30.5 29