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Noise monitoring program
Active Air Quality Notification
  • An air quality ADVISORY for Unhealthy OZONE levels is in effect from 7/15/2025 12:00 to 7/15/2025 23:00 for these counties: Kenosha,Racine,Milwaukee,Ozaukee,Sheboygan,Manitowoc,Kewaunee,Door .

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 54.3 54.1 53.8 53.3 52.4 50.4
Brown Green Bay UW ppb 45.1 44.7 44.8 44.9 44.6 44.5 44.3 44.9 45 44.8 44.8 45.3 45.8 46.6 47.3 48 49 50.1 50.9 51.2 51.5 51.3 50.9 50.4
Columbia Columbus ppb 41.5 40.6 39.8 38.8 38.1 37.2 36.5 35.8 35.6 35.8 36.5 38.1 39.7 41.7 43.6 45.7 47.6 49.3 50.3 50.1 49.2 48.1 46.7 44.8
Dane Madison East ppb 40.3 39.2 38.2 37.5 36.8 36.2 36 35.8 36 36.5 37.6 38.7 39.9 41.5 43.3 45.3 47.1 48.5 49.2 49.2 48.5 47.6 46.2 44.4
Dodge Horicon Wildlife Area ppb 47.2 46.6 45.9 44.9 44.3 43.2 42 40.9 39.9 39.5 39.5 40.4 42.1 44.5 47 49.8 52.7 54.9 56.4 56.6 55.7 54.2 52.4 50.2
Door Newport Park ppb 54.7 54.4 54 53.6 53.4 52.8 52.3 51.9 51.8 52 52.4 53 53.5 54.4 55.6 56.7 57.6 58.1 58.1 58.1 57.9 57.6 57 56.2
Eau Claire Eau Claire DOT Sign Shop ppb 44.3 43.1 41.7 40.2 39.8 38.6 36.8 35.7 35 34.6 35.3 36.7 37.6 39.1 40.9 42.6 44.5 46.3 47.5 47.7 47 44.1 42 38.9
Fond du Lac Fond Du Lac ppb 47.7 47.1 46.4 45.6 45 44.1 43.4 42.7 41.8 41.1 40.9 41.4 42.5 43.8 45.3 47.1 49.1 50.7 51.9 52.3 51.9 50.7 48.9 46.9
Forest Potawatomi ppb 52.5 52.5 52.5 52.3 52 51.5 50.9 50.2 49.4 48.6 48.2 48.1 48.4 48.8 49.4 50 50.7 51.3 51.9 52.3 52.6 52.7 52.5 52
Jefferson Jefferson-Laatsch ppb 43.3 42.2 41.1 40.1 39.4 38.3 37.5 37 36.7 36.7 37.3 38.8 40.4 42.5 44.4 46.7 48.9 50.7 51.4 51 50.2 49.1 47.8 45.9
Kenosha Chiwaukee Prairie ppb 50.8 49.4 48.1 46.7 46 44.9 43.9 42.9 42 41.2 41.3 41.9 42.8 44.1 45.8 47.5 49.5 51.4 52.9 54 54.1 53.6 52.3 50.8
Kenosha Kenosha-Water Tower ppb 49.2 48 46.8 45.5 44.8 43.4 42.2 40.9 39.6 38.7 38.6 39.2 40.3 41.7 43.4 45.5 47.7 50.2 51.9 52.4 52 51 49.3 47.1
Kewaunee Kewaunee ppb 54.3 53.8 53.2 52.8 52.7 51.9 50.7 49.8 49.6 49.7 50.2 51 51.5 52.2 52.8 53.2 53.6 54.1 54.5 54.4 54.4 54.3 54.1 53.9
La Crosse La Crosse DOT ppb 39.8 39.5 39.1 38.8 38.4 37.6 36.7 36.1 35.7 35.7 36.2 36.9 37.8 38.9 40.8 42.8 44.8 46.6 48.3 49.4 50 50.1 49.2 47.4
Manitowoc Manitowoc ppb 50.4 50 49.7 49.6 50.2 49.9 49.1 48.5 48.2 48.2 48.5 49.2 49.7 50.4 51.1 51.6 52.4 53.2 53.9 54.2 54.3 54.5 54.6 54.6
Marathon Lake Dubay ppb 47.3 45.9 44.7 43.8 43.4 42.6 41.6 40.6 40.2 40.3 41 42.3 43.6 45.5 47.8 50.3 52.8 54.9 55.9 56.1 55.7 54.4 52.4 49.9
Milwaukee Bayside ppb 51.3 50.6 49.9 49 48.5 47.4 46.1 44.9 43.8 43 42.8 43 43.7 44.3 45.4 46.7 48.4 49.9 51.1 51.7 52.2 52.3 52.4 52
Milwaukee Milwaukee-16th St. Health Center ppb 43.9 43.6 43.7 42.7 42.4 41.1 39.9 38.4 36.7 35.4 35.4 36 37 38.2 39.5 41.1 43.2 44.5 45.4 46 45.5 44.4 42.5 40
Milwaukee Milwaukee-UWM UPark ppb 49.7 48.9 48.3 47.4 46.9 45.9 44.6 43.4 42.3 41.6 41.5 41.7 42.4 43.1 44.4 45.8 47.4 49 50.2 50.6 50.7 50.3 49.5 48.8
Outagamie Appleton ppb 40.3 39 38.9 39.3 39.5 40.4 41.1 41.6 42.4 42.6 42.3 42.6 43.4 44.1 45.3 46.7 48.3 49.8 51 51.5 51.5 50.9 49.7 48.4
Ozaukee Grafton ppb 51.1 50.5 49.9 49 48.7 47.6 46.4 45.2 44.3 43.5 43.5 43.8 44.5 45.2 46.2 47.6 49.1 50.5 51.4 51.9 52.3 52.6 52.6 51.9
Ozaukee Harrington Beach Park ppb 52.8 52.5 52 51.4 51 50 49.1 48.1 47.2 46.4 46.2 46.5 47.1 47.8 48.6 49.7 50.9 52 52.7 53 53.1 53.1 52.9 52.2
Racine Racine-Payne & Dolan ppb 49.9 48.8 47.8 46.7 46.2 45 43.9 42.5 41.9 42.8 44.2 46 48.2 48.9 49.5 50.7 51.7 52.3 52.3 51.6 50.8
Rock Beloit-Converse ppb 39.6 39.4 39.4 39.5 39.8 39.5 38.6 37.7 36.9 36.2 36.3 36.9 37.8 39.2 41.1 43.3 45.2 46.8 47.7 48.1 48.2 47.9 46.9 45.3
Sauk Devils Lake ppb 42.1 41.3 40.4 39.4 38.8 38 37.1 36.5 36.5 37.3 38.8 40.6 41.7 43.4 45.1 46.7 48.4 49.6 50 49.7 48.9 47.6 46 44.5
Sheboygan Sheboygan-Haven ppb 50.3 50.1 50 49.6 49.7 49 47.9 47 46 45.4 45.5 45.9 46.6 47.5 48.3 49.4 50.6 51.6 52.2 52.4 52.4 52.3 52.1 51.3
Sheboygan Sheboygan-Kohler Andrae ppb 50.3 50 49.5 48.9 48.6 47.6 46.7 45.7 45 44.5 44.6 45.1 45.7 46.4 47 48 49.1 50 50.5 50.6 50.7 50.7 50.6 50.1
Vilas Trout Lake ppb 51.3 50.5 49.7 49.1 49 48.2 47.3 46.5 45.7 45.2 44.8 44.9 45.6 45.7 46.2 51.4
Walworth Elkhorn ppb 42.9 41.3 39.6 38.2 37.3 35.9 34.6 33.5 32.8 33.1 34.4 36.1 37.8 39.6 41.8 44.3 46.6 48.3 49 48.9 48.3 47.9 47 45.5
Waukesha Waukesha-Cleveland Ave. ppb 47.8 47.2 46.3 45.1 44.5 42.7 41.4 40.2 38.8 37.8 37.6 38.3 39.9 42.1 44.3 46.7 49.3 51.8 53.4 53.6 52.8 51.8 50.4 48.6