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Noise monitoring program
Active Air Quality Notification
  • An air quality ADVISORY for Unhealthy for Sensitive Groups OZONE levels is in effect from 8/7/2025 12:23 to 8/7/2025 23:00 for these counties: Door,Kenosha,Kewaunee,Manitowoc,Milwaukee,Ozaukee,Racine,Sheboygan,Walworth,Washington,Waukesha .

8-HR Ozone Summary

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Monday, 
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 15.6 16.2 16.8 17.6 18.5 20.3 23.7 26.2 28.2 30.4 31.7 33.4 33.5 35.3 36.3 36.6 36.1 35.2 34.5 34.4 34.1 34.2 33.3 32.7
Brown Green Bay UW ppb 43.4 42.9 41.8 41.4 41.5 40.5 39.8 39.7 39.7 40.5 41.9 44.4 45 46.6 47.3 46.9 46.5 46.8 47.6 48.6 49.9 50.3 49.2 47.8
Columbia Columbus ppb 44.8 43 42.1 41.4 40.7 39.4 39.6 40 40.7 42 42.8 43.6 43.4 43.5 44.1 45.2 45.5 44.9 43.9 42.7 42.3 42.3 41.3 39.2
Dane Madison East ppb 51 48.4 45.9 44.1 42.5 41.4 39.9 40.1 41.2 42.6 43.5 43.7 43.2 42.8 43.2 43.4 43.2 42.7 42.2 41.3 40.9 40.7 39.5 37.8
Dodge Horicon Wildlife Area ppb 51 49.7 48 46.5 45.9 43.9 42.5 41.9 41.9 42.8 44 45.3 46.1 47.1 47.5 47.8 47.8 47 45.4 43.2 41 40 39.2 37.8
Door Newport Park ppb 40.5 41.5 43 44.7 45.4 47.3 48.5 49.8 50.7 50.3 49.1 49.3 50.2 50.8 52.4 53.5 53.9 55.5 57.2 58.7 60.1 61.4 61.7 61.7
Fond du Lac Fond Du Lac ppb 47.5 46.1 44.9 44.2 43.9 43 42.2 41.6 41.8 43.4 45.3 47.2 48 48.7 48.8 49.2 49.3 48.4 46.7 44.5 42.1 40.7 39.9 38.9
Forest Potawatomi ppb 38.1 36.8 36 35.2 34.4 33.4 31.1 28.8 27.7 28.2 29.5 30.7 31.4 32.5 34.5 36.6 37.6 38.1 37.5 37.6 37.3 36.3 36 35.6
Jefferson Jefferson-Laatsch ppb 47.8 44.7 41.7 39.6 39 36.7 34.8 34.8 36.5 39.2 42.2 45.8 46.3 46.6 47.3 47.3 46.8 46 45.1 43 42.3 42.9 42.6 41.1
Kenosha Chiwaukee Prairie ppb 57.7 56.5 55.6 54.8 54.2 51.5 48.1 45.4 45.4 45.6 47.7 51 54.6 58.8 62.5 64.3 64.9 64.3 61.5 57.2 52.3 48.2 45.3 44.5
Kenosha Kenosha-Water Tower ppb 55.6 55.7 55.6 54.9 54.8 52.5 49.6 47.4 46.2 46.7 48 49.6 51.3 54.4 57.4 58.4 58.2 56.9 54.8 52.3 49.7 46.5 44.5 44
Kewaunee Kewaunee ppb 51.2 51.8 51.5 50.5 50 49.1 48.7 48.4 48.5 48.6 49.4 50.9 51.6 53.5 55.2 56.3 57.9 60.3 63.4 65.9 67.5 67.9 66.6 65
La Crosse La Crosse DOT ppb 44.2 43 41.9 40.7 40.2 40.6 40.9 40.9 40.3 39.1 38.3 37.8 38 37.5 37.4 37.6 37.9 38.5 38.9 38.6 36.4 33 29.2 24.7
Manitowoc Manitowoc ppb 48.2 47.4 46.9 46.8 46.4 46.3 46.6 47.6 49 50.6 52.3 53.5 53.9 55.5 57 59.1 61.7 64.1 65.8 67 67.9 67.1 65 60.2
Marathon Lake Dubay ppb 36.2 35.4 35.1 34.8 34.6 33.6 33.3 33.8 34.4 35.3 36.7 37.3 36.9 37.1 37.4 37.6 37.9 37.7 36.8 35.9 34.8 33.5 31.8 29.6
Milwaukee Bayside ppb 54 51.1 47.3 43.3 41.7 39.1 37.2 36.7 37.3 39.2 43 47.9 50.9 56.7 60.3 61.6 62.1 62 61.6 59 54.5 48.7 44.1 41.3
Milwaukee Milwaukee-16th St. Health Center ppb 43.3 42.4 42 42.7 43.4 44 44.4 44.5 44.8 46.3 47.8 49.2 50.3 51.6 52.4 52.8 52.2 50.2 47.7 45.2 42 39.3 37.6 36.6
Milwaukee Milwaukee-UWM UPark ppb 50.2 48.4 47.5 46.7 46.3 46.7 46.7 47 47.2 47.6 48.4 49.9 52.5 56.5 59.2 59.9 60 59.5 58.7 56.4 51.9 46.7 43.2 41.2
Outagamie Appleton ppb 50.3 48.5 46.6 45.9 46.2 47 46.8 46.4 46.6 47.2 49 50.9 51.6 51.5 51.3 51.3 50.7 49.9 47.9 45.2 42.4 39.8 37 34.1
Ozaukee Grafton ppb 54.5 53.6 50.8 46.2 44.9 42.2 39.2 37.9 37.4 37.6 40.1 45 47 52.8 57.7 59.6 60.2 60 59.8 58.4 54.8 48.2 41.2 37.8
Ozaukee Harrington Beach Park ppb 50.5 49.4 48.6 47.6 47.8 46.9 47.4 47.5 47.8 48.4 49.1 51.5 53.4 57.7 60.5 63.7 65.8 67.2 67.2 66.3 63.9 60 55.2 49.1
Racine Racine-Payne & Dolan ppb 58.9 58.4 57 56.6 56.8 56 54.3 52.4 50.4 49 50.2 53.2 56.7 60 62.8 64.7 66 66.1 64.6 60.2 54.8 49.6 45.7 43.5
Rock Beloit-Converse ppb 45.4 42.6 39.4 36.8 35.1 34.9 37.1 38.7 40.7 43.1 46.1 49.4 49.5 51.1 51.4 51.2 50.4 49.3 47.6 45.6 44 42.6 43.2 42
Sauk Devils Lake ppb 52 51.8 52.1 52.1 52.4 52.3 50.9 49 47 45 43 40.6 39.7 38.5 38.1 37.7 37.1 36.5 35.5 34.4 33.2 30.8 28.1 24.4
Sheboygan Sheboygan-Haven ppb 51.4 50.5 49 47.6 46.8 45 43.6 42.6 42.8 43.8 46.3 49.5 51.5 54.7 58.6 62.2 64.4 65.3 65 63.3 61.3 58 53.2 47.7
Sheboygan Sheboygan-Kohler Andrae ppb 50.6 50.7 50.2 49.6 49.3 49 48.9 49.9 51.8 53.7 55.5 57.1 57.5 59.6 62.8 65.4 67 67.8 68.6 68 67.1 64.9 61.2 57.3
Vilas Trout Lake ppb 19.5 19.2 19.2 18.4 18.8 19.2 20.2 20.8 22.1 24.5 27.4 31.3 33 35.3 36.9 38.6 40 40.1 39.2 37.9 36.2 35.2 34.3 33.1
Walworth Elkhorn ppb 49.2 46.1 43.1 40.3 39.6 38.8 38.5 39.1 40.5 43.4 46.5 50.4 51.5 53.7 54.6 54 53.6 52.8 51.5 49.6 46.8 45 44.5 44.2
Waukesha Waukesha-Cleveland Ave. ppb 52.2 50.4 48.5 46 45.4 43.1 40.8 39.5 39.6 41.1 42.7 45.8 47.3 49.9 50.7 51.4 50.8 49.3 48 46.1 42.9 40.5 39.8 38.4