-
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:
Saturday, 
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 32.3 29.6 27.4 27.8 28.4 29.9 31.7 33.9 36 37.9 39.8 41.2 42.8 44.2 45.7 46.7 47.2 47.4 47.6 47.6 47.5 46.7 45 42.2
Brown Green Bay UW ppb 45.4 44.3 43 41.8 40.2 38.8 37 35.6 35 35.3 36.8 38.8 41.5 44.4 47.6 50.3 52.3 53.3 53.3 53 52.5 51.7 50.9 49.8
Columbia Columbus ppb 44.1 42.8 41.2 40 39.9 39.8 39.8 39.5 39.8 41.3 43.7 46.1 47.9 49.9 52.1 54.3 56.2 56.8 56.4 55.5 54 51.9 49.5 46.8
Dane Madison East ppb 24.6 18.2 12.9 8.5 5.7 2.5 2 5 9.8 16 22.7 29.5 36.4 43.4 49.4 53.3 55.3 55.8 55.9 55.4 54.8 53.7 52 50.2
Dodge Horicon Wildlife Area ppb 42.9 40.8 38.9 37.5 36 34.6 33.2 33.3 34.2 35.9 38.4 41.2 44 47.7 51.5 54.4 56.3 57.3 57.5 57 56.5 55.2 53.5 51.3
Door Newport Park ppb 51 50.5 49.2 48 47.8 47.3 46.9 47.4 47.6 48 49.5 51 52 53.4 54.9 55.7 56.3 56.7 57.1 57.4 57.6 57.5 57.2 56.9
Eau Claire Eau Claire DOT Sign Shop ppb 22.2 17.5 13.4 10.6 10.5 10.9 11.8 14.8 19.4 23.9 28.8 33.6 37.3 41.2 44.8 47.1 48 48.4 48.1 47.4 46.7 46.1 45.4 44.7
Fond du Lac Fond Du Lac ppb 41.3 38.8 36.7 35 32.8 30.9 29.6 30 31.2 33.5 36.3 39.1 42.7 46.2 49.8 52.3 53.7 54.1 53.9 53.1 52 50.5 48.7 46.8
Forest Potawatomi ppb 47.8 47.2 46.9 46.6 46 45.2 44.7 44.4 44.5 44.9 45.2 45.6 46.2 47.1 48 48.8 49.2 49.4 49.6 50 50.5 50.9 50.8 50.2
Jefferson Jefferson-Laatsch ppb 25.8 21.1 16.5 13.8 12.1 9.4 8.8 11.2 14.9 19.7 26.2 32.7 35.6 42.5 48.5 52.2 54.6 55.7 55.7 55.1 53.5 51.6 49.3 46.4
Kenosha Chiwaukee Prairie ppb 37.8 34.4 31.3 28.6 27.8 28.7 29.2 30.1 31.3 33 34.3 35.9 38.4 40.3 42 43 44.1 46.3 48.6 50.4 51.7 52.8 53.4 53.4
Kenosha Kenosha-Water Tower ppb 42.5 39 35.7 33.2 30.8 28.4 27.1 27.5 29.5 32.6 36.3 39.1 42.5 46.2 49.2 51.1 51.9 52.6 52.9 53.8 53.8 53.6 53.3 52.4
Kewaunee Kewaunee ppb 46.7 45.8 45 44.7 44.7 45.2 44.8 44.7 45.3 45.6 46.2 47.3 48.4 49.5 51.4 53.5 54.7 56 56.6 56.7 56.5 55.9 54.9 53.4
La Crosse La Crosse DOT ppb 31.6 27.5 23.1 19.3 15.1 12.3 11.4 12 13.9 17 21.2 26.5 32.5 38.2 42.4 46.2 48.5 50.1 51 51.3 51.1 50.5 50.1 49.6
Manitowoc Manitowoc ppb 37.9 33.7 29.2 25 23 20.5 19.4 22.1 23.9 26.4 29.7 34.1 37.6 41.9 46.1 48.3 50.6 52.4 53.6 54.1 54.1 53.9 53.5 52.9
Marathon Lake Dubay ppb 45.6 44.9 43.8 41.6 39.4 38.5 37.7 36.9 37 37.6 38.8 41.6 44.8 47 49 51 52.1 52.7 53.2 53.5 53.3 53 52.8 52.5
Milwaukee Bayside ppb 35.5 28.9 22.3 16.2 10.9 7.4 7.4 9.6 14.2 18.6 23.2 28.5 34.5 40 43.4 45.9 46.9 48.9 50.8 51.8 52.2 52.1 51.9 51.2
Milwaukee Milwaukee-16th St. Health Center ppb 28.6 25.8 21.9 18.4 16.8 14 12.4 13.7 17.2 19.8 23.7 28.2 30 34.7 38.1 39.7 40.1 40.9 41.9 42.2 41.8 41.2 40.4 39.7
Milwaukee Milwaukee-UWM UPark ppb 33.8 28.6 23.1 17.4 12.2 7.9 7.1 9.3 13.5 17.2 21.5 26.7 32.6 38.4 42.3 44.3 45.2 46.8 48.3 49 49.2 48.8 48.1 47
Outagamie Appleton ppb 41 38.1 34.8 31.8 28.6 25.6 23.7 23.9 25.2 27.7 31.4 35.8 40.9 45.6 49.7 52.4 54.2 55.3 55.6 55.2 54.3 53.1 51.2 49.4
Ozaukee Grafton ppb 41 37.4 34.3 31.7 28.6 26.5 26 27.4 30.1 32.7 34.5 36.4 39.8 43 45.7 47.5 48.4 49.1 50.5 51.4 51.7 51.5 51.5 51.1
Ozaukee Harrington Beach Park ppb 47.5 45.1 42.9 41.4 39.7 38 36.3 35.3 35.2 35.5 36.2 37.5 39.5 41.9 44.5 46.6 48.1 49.6 50.9 51.8 52.6 53 52.9 52.7
Racine Racine-Payne & Dolan ppb 41.2 38.3 35.5 31.6 29.6 28.7 28 28 28.7 30 32.2 36 40 42.8 45.3 46.7 48 49.9 51.4 52.3 52.6 52.6 52.6 52.8
Rock Beloit-Converse ppb 22.3 17.6 13 11.7 12 11.1 11.2 13.9 17.1 20.9 25.8 31.2 36.5 43 49.1 52 54.1 55.2 55.3 54.7 53.8 52.5 51.2 50
Sauk Devils Lake ppb 35.3 33 30.8 30.4 30.2 30.3 30.4 32 34 36.4 39.1 41.8 45.1 48.5 52 53.9 55.2 55.9 55.9 55.5 54.8 54 53.3 52.3
Sheboygan Sheboygan-Haven ppb 44.7 43.5 42.3 41.2 39.5 37.5 35.3 33.9 32.9 33.4 35.1 36.4 39 42.4 46.3 49 51.1 51.8 51.8 52.2 52.1 51.3 50.3 49.1
Sheboygan Sheboygan-Kohler Andrae ppb 44.5 42.1 39.4 36.6 33.8 32.1 31.2 30.8 30.7 31.1 32.3 34.7 38.1 41.6 44.4 46.6 48.6 50.2 51.3 51.8 52.1 52.5 53 53.4
Vilas Trout Lake ppb 41.1 38.9 36.6 34.4 33.4 31.1 29.1 29.6 31.3 33.4 36 38.5 40.3 43.6 47.1 48.8 49.6 49.7 49.8 49.6 49.2 48.1 46.3 44.6
Walworth Elkhorn ppb 41.7 39.9 38.2 37 35.4 34.1 32.8 32.9 33.8 35.6 38.1 40.9 44.3 47.4 51 53 54.5 54.9 54.3 53.1 51.5 48.9 46.2 43.4
Waukesha Waukesha-Cleveland Ave. ppb 37.5 33.8 29.2 24.4 20 15.2 11.6 11.4 14.1 18.1 23.6 30 36.5 43.2 49.4 53.3 54.8 55.1 54.8 54.1 53.3 52.4 51.1 49