-
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:
Tuesday, 
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 22.4 22.4 21.7 21.3 21.8 22.7 23.1 23.6 25.5 27.5 29.6 31.7 32.8 33.7 35.2 37.1 37.8 38.1 38.3 38.2 37.3 35.7 34.3 32.2
Brown Green Bay UW ppb 32.3 32.5 32.8 32.5 32.8 32.1 30.4 28.6 27.1 25.8 25.5 25.8 27.1 29.7 34.3 40.3 48.4 56.7 63 67.7 71.1 72 70 66.2
Columbia Columbus ppb 44.7 43.3 41.8 40.4 38.7 36.4 34.5 33.5 33.4 34 35.5 37.6 41 45.1 48.7 51.5 53.3 54.4 54.4 53.4 51.5 48.9 46.2 43.6
Dane Madison East ppb 38.4 36.4 35.2 33.8 33.7 33.2 32 31.5 31.6 32.3 33.4 35.5 38.3 41.8 45.6 48.7 50.8 52.1 52.7 52.4 51.4 49.6 47.3 44.7
Dodge Horicon Wildlife Area ppb 45.4 44 42.4 40.7 39 37.3 35.6 34.2 33.5 33.7 34.8 37.1 40.5 44.3 48.4 52.6 55.8 57.9 58.8 58.3 56.7 55.1 52.9 50.2
Door Newport Park ppb 27.1 27.2 26.7 26.2 26.6 27.1 28.3 30 31.6 33.1 35 37.1 38.3 39.8 40.6 41.3 42.3 43.4 45.3 50.3 57.2 63.5 69.7 74.8
Eau Claire Eau Claire DOT Sign Shop ppb 33.9 34.4 34.8 35.1 34.9 34 32.7 31.2 30.1 29.6 29.8 30.5 32.2 35 38.5 42.2 45.4 47.9 49.4 49.9 49.8 48.5 45.7 43.3
Fond du Lac Fond Du Lac ppb 43.5 42.7 41.8 41.5 41.6 40.2 38 35.9 34.9 34.6 35 36.1 38.1 41.3 44.8 48.6 51.6 53.6 54.9 55.2 54.1 52.4 50.7 48.4
Forest Potawatomi ppb 28 26.9 26 25.1 24.2 23.5 23.5 23.8 24.2 24.6 25.1 25.8 27.2 28.9 30.6 32.5 34.3 36 37.4 38.4 38.9 39 38.8 38.6
Jefferson Jefferson-Laatsch ppb 41.1 39.7 38.3 37.1 36.5 34.9 32.5 31.1 31.1 32.3 34.1 36.6 40 43.5 47.4 50.5 52.4 52.9 52.5 51.6 50 48.7 46.7 44.4
Kenosha Chiwaukee Prairie ppb 56.1 53.7 50.8 48.5 44.9 40.3 36 33.2 32.9 34.3 39.7 45.5 55.3 64.2 72.2 78.5 83 85.3 82.7 78.9 71.7 65.8 60.6 56.6
Kenosha Kenosha-Water Tower ppb 50.9 49.1 46.5 43.1 39.7 34.9 30.2 26.7 26.3 27.7 30 33.3 37.8 44.2 50.5 55.4 58.2 60.3 60.9 60.3 58.3 55.8 54.1 53.1
Kewaunee Kewaunee ppb 37.1 37.6 38 37.4 37.3 36.7 35.6 34.5 33.6 33 32.6 32.8 33 33.6 35.9 43.7 52.7 61.3 69.1 76.2 82.9 88.3 90.5 85.2
La Crosse La Crosse DOT ppb 34.2 34 33.4 32.3 31.4 29.9 28.6 27.2 26.8 27.3 28.7 30.8 33.6 36.8 40.1 43.3 45.4 46.5 46.8 46.5 45.4 43.9 42 40
Manitowoc Manitowoc ppb 35.4 34.9 35.1 35.4 34.7 33.8 32.2 30.6 29 27.8 26.8 26.4 27.5 29.8 34.2 41.9 50.8 60.1 68.6 76.3 82.5 87.3 89.4 86.7
Marathon Lake Dubay ppb 35.4 34.6 33.5 32.5 31.4 30.2 29.1 28.3 28 28.7 30.3 32.3 34.6 37 39.8 42.9 45.8 48.1 49.5 50.5 50.9 50.8 50.2 49.2
Milwaukee Bayside ppb 48.8 46 43.3 41.1 39.5 38.8 37.8 36.8 35.8 35.3 35.4 37.2 41.9 48.4 56.9 63.9 68.9 72 74.4 75.4 72.8 67.8 60.8 55.2
Milwaukee Milwaukee-16th St. Health Center ppb 40.7 39.1 37 36.4 33.9 29.8 26.2 23.1 21.2 20.3 19.9 19.4 23.9 30.3 36.5 42 46.4 50 53.7 56.7 55.3 52.9 50.5 48.7
Milwaukee Milwaukee-UWM UPark ppb 47.5 44.9 42.5 40.5 38.6 37.1 35.5 34.3 33.1 32.6 33.6 36.3 41 46.6 54.6 60.1 64.4 67.7 69.7 69.3 66.4 62.6 56.5 52.9
Outagamie Appleton ppb 30.8 27.8 26.7 27.2 28 28.7 29.4 30.6 32.1 33.3 34.1 34.3 34.6 35.2 36.4 38.9 42.9 46.6 49.3 51.5 53.1 53.9 54.1 52.8
Ozaukee Grafton ppb 48.9 46.5 44 41.9 41.2 40.6 39.4 37.9 36.3 35.4 35 36.5 38.8 43.2 51.3 59 64.8 68.7 71.1 72.4 71.9 68.8 62.2 56.1
Ozaukee Harrington Beach Park ppb 45 43 42.1 41.8 41.3 40.4 39 37.2 35.9 35 35.2 35.4 36.6 40.5 47.3 55 62.6 68.8 73.6 77.1 78.4 75.4 70 63.4
Racine Racine-Payne & Dolan ppb 49.9 48.7 46.5 44.1 43 39.1 35 32.5 32.5 33.1 36.7 42.8 47.4 56.1 63.8 69.9 73.2 75.9 75.7 72.4 68 61.4 57.2 53.9
Rock Beloit-Converse ppb 38.8 36.1 33.6 31.5 30.3 29.1 28 27.8 28.2 28.7 30.3 33 37 41.3 45.5 48.4 50 51.4 52 51.9 51.2 49.9 48.1 45.9
Sauk Devils Lake ppb 41.1 41 39.7 37.7 36.7 35.5 34.7 33.7 33.1 32.9 33.4 34.5 36.6 39.5 42.4 45.5 48.5 50.8 52.3 52.9 52.7 52 50.5 48.3
Sheboygan Sheboygan-Haven ppb 34.8 32.5 30.8 29.7 28.1 27 26.1 26 26.7 28 28.3 28.5 31.1 36.6 44.2 53.8 61.9 68.4 73.4 77 77.4 74 68.8 61.3
Sheboygan Sheboygan-Kohler Andrae ppb 37.4 36.4 35.8 35.2 34.5 33.4 32.1 31.7 32 32 32 32.8 33.4 34.2 36.7 41.8 49.1 56.4 62.7 68.2 73 76.6 78.1 75.6
Vilas Trout Lake ppb 33.5 33.5 33.8 34.2 34.2 33.8 32.9 32.2 32.3 32.7 33 33.1 33.3 34 35.6 37.3 38.5 39.7 40.6 40.9 40.7 39.3 36.8 34.8
Walworth Elkhorn ppb 47.2 44.6 41.5 38.6 36.5 34.3 32.2 30.8 30.2 31.3 33.4 36.6 40.3 44.1 47.8 50.8 52.7 53.8 54.4 53.7 52.4 50.7 49.2 47.6
Waukesha Waukesha-Cleveland Ave. ppb 38 36.1 33.3 31.8 29.4 25.1 22.2 20.7 20.6 22.1 25.5 30.1 35.1 40.9 45.9 49.7 52 53.2 53.9 53.1 51.8 50.2 48.5 46.7