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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

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Thursday, 
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 33 35.6 39.1 43.2 44.3 45 46.3 47 46.6 46.4 46.4 46.7 47.3 48.3 49.8 51.6 52.5 52.6 52.1 51.4 50.6 49.2 47.1 44.8
Brown Green Bay UW ppb 45.1 45.9 46.8 47.5 48.1 48.6 48.6 48.3 47.7 46.7 46.5 47.3 48.5 49.6 50.9 52.1 52.9 53.5 53.2 51.7 49.8 48.3 46.7 45.7
Columbia Columbus ppb 50.5 48.1 47.4 45.2 43.8 43.1 42.6 42.4 43.5 45.9 48.3 51.2 53.7 55.9 57.8 59.2 60.3 60.2 59.6 58.5 57 55.2 53.1 51
Dane Madison East ppb 52.9 50.9 49.1 47.5 46.2 44.9 44.1 44.1 45 46.6 48.9 51.4 53.9 56.4 58.4 60.1 61 61.3 60.7 59.5 57.9 56 54.1 52.1
Dodge Horicon Wildlife Area ppb 51.2 50.1 49 48.4 48 47.5 47.4 47.2 46.7 47.4 49.4 51.8 54 56 57.8 59.2 60.4 60.8 60.5 59.5 57.9 56.1 54.1 52.4
Door Newport Park ppb 33.6 35.1 37.6 40.3 44 46.8 48.6 50.5 51.7 52.3 52.2 51.7 50.8 52.3 54.1 55.6 58.3 60.8 62.1 62.8 62.5 60.6 58.2 55.5
Eau Claire Eau Claire DOT Sign Shop ppb 51.5 51.7 51.9 51.5 51.1 50.6 50.5 49.4 47.5 45.9 44.3 43.4 43 43.6 44 45.6 47.3 48.6 49.3 49.1 47.9 45.2 42.3 39.6
Fond du Lac Fond Du Lac ppb 50.1 50 49.6 49.1 48.3 47.5 47.2 47 46.6 47.2 48.9 51.5 54 56.1 57.4 58.8 59.8 60 59.5 58.5 57.3 55.8 54.4 52.8
Forest Potawatomi ppb 43.6 43.7 43.6 44.1 44.8 45.7 46.5 46.1 45.6 45.4 45.4 45.1 45.2 45.1 45.3 46.4 48.2 50.2 51.8 52.8 53.3 53.3 52.7 51.6
Jefferson Jefferson-Laatsch ppb 54.5 51.9 50.1 49.2 49 48.9 48.9 49.6 50.6 51.7 52.7 54.1 55.2 56.2 57.3 58.2 59.1 59.7 59.5 58.6 57.4 56.3 55.5 54.8
Kenosha Chiwaukee Prairie ppb 52.7 50.8 51.1 52 53.3 55.4 56.3 56.9 58.9 62.1 63.8 64.5 65.5 66.6 67.5 67.7 67.4 66.3 65.3 64.8 64.1 63.7 64.5 66.1
Kenosha Kenosha-Water Tower ppb 53.4 51.5 51 51.7 53.1 54.7 55.5 55.5 57.1 60.1 61.7 62.4 63.1 64 65.2 65.8 65.7 65.1 64.3 63.8 63.3 62.6 62.2 62.7
Kewaunee Kewaunee ppb 46.1 47 48.5 49.4 49.4 48.6 47 47 46.9 46.2 46 47.1 49.1 52.7 56.8 57.3 59.9 62.1 62.8 61.2 59.5 56.6 53.8 53.4
La Crosse La Crosse DOT ppb 52.8 52.4 51.9 51.4 50.8 50.1 48.6 47.4 46.9 46.2 45.9 46 45.8 45.3 45.2 45.6 45.7 45.6 44.8 42.8 40.1 37.8 35.8 33
Manitowoc Manitowoc ppb 47.9 47.4 47.3 47.7 48 47.6 46.5 44.9 44.8 44.9 45.8 48.5 52.5 57.4 63.6 70.1 74.9 79 81.8 81.4 76.9 69.6 61 52.5
Marathon Lake Dubay ppb 46.1 45.1 44.8 45.5 45.7 45.7 45.7 45.4 44.5 44.1 43.6 42.5 40.9 39.3 38.7 39.4 41 41.9 42.4 42.8 43.6 44.6 44.5 43
Milwaukee Bayside ppb 47.9 46.9 45.7 45.1 45.8 46.5 47 48.5 51.3 52.9 54.9 57.4 59.4 61.4 62.4 63.2 63.9 64.5 64.7 63.6 62.1 60.3 59.5 59.1
Milwaukee Milwaukee-16th St. Health Center ppb 44.9 44.1 43 42.4 42.4 43.6 44.8 46.7 48.2 50 52.3 54.8 56.6 57.9 59.2 60.2 60.7 61 60.6 59.3 58.1 57 56.2 55.4
Milwaukee Milwaukee-UWM UPark ppb 51.3 50.6 49.4 48.4 48.2 48.3 49 50.5 51.3 53.1 55.4 58 60.2 62 63.5 64.8 65.5 65.8 65.6 64.4 62.9 61.4 60.5 59.6
Outagamie Appleton ppb 50.1 49.6 49 48.5 48.1 48.5 48.5 47.2 45.6 45 46.3 48 49.7 51.3 53 54.2 53.9 53.4 52 50.6 49.2 47.4 46.2 45.1
Ozaukee Grafton ppb 47.9 46 44.6 44 43.6 43.6 44 45.4 46.8 48.7 50.8 53 55.6 57.3 58.5 59.1 59.7 60.2 60.5 60 58.9 57.9 57.1 56.5
Ozaukee Harrington Beach Park ppb 49.1 48.2 46.8 44.7 43 41.8 41.5 42.1 42.7 44 46.2 49.7 53.9 58.1 60.6 61.3 62.3 62.3 62.5 62.1 60.1 57.4 55.6 54.8
Racine Racine-Payne & Dolan ppb 54.6 53.5 52.3 52 52.4 53.1 54.2 54.6 54.7 57 59.6 61.5 63.1 64.4 65.6 66.6 66.8 66.4 65.3 64.5 63.6 62.5 61.6 61.2
Rock Beloit-Converse ppb 53 50.7 49.3 49.2 49.5 50.3 51.7 52.3 53 54 55 55.5 56.1 57 57.8 58.9 59.9 60.3 59.6 58.5 57.5 56.6 55.7 54.7
Sauk Devils Lake ppb 51.6 50.7 50.2 49.9 49 47.7 46.2 45.1 44.9 45.5 46.8 48.1 49.5 50.8 52 52.8 53 53.3 52.7 52.4 52.2 51.9 51.4 51.2
Sheboygan Sheboygan-Haven ppb 48.4 47.9 46.9 45.2 43.8 43.4 43.6 44 44.5 45.1 47 50 53.1 55.8 57.3 57.9 58.5 58.8 58.4 57.9 57.1 55.5 54 52.8
Sheboygan Sheboygan-Kohler Andrae ppb 51.1 50.5 49.9 49.1 48.3 47.1 46.7 47.5 48.2 48.6 50.7 54.1 58.7 64.1 69.2 72.9 76.3 79.5 80.3 78.9 76 71.6 66.6 62.1
Vilas Trout Lake ppb 40.6 42.4 44.4 46.2 47.8 48.7 48.7 48.1 47.7 47 46.7 46.8 46.9 47.3 48.3 49.9 52 54.1 55.5 56.2 55.8 54.3 52.9 51.2
Walworth Elkhorn ppb 53.3 50.4 48.3 48.2 49.1 50.3 50.9 51.4 52.8 54.5 55.8 56.9 58.1 59.5 60.6 61.3 61.8 61.8 61.2 59.9 58.8 57.7 56.7 56
Waukesha Waukesha-Cleveland Ave. ppb 49.5 47.7 44.8 44.3 44.4 45.4 46.3 47.2 48.7 51 55.4 56.6 57.5 58.9 60 60.8 61.5 62.2 62.2 60.9 59.4 57.8 56.8 56.1