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Noise monitoring program
Active Air Quality Notification
  • An air quality ADVISORY for Unhealthy PM2.5 levels is in effect from 8/4/2025 12:00 to 8/5/2025 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,Green Lake,Iowa,Iron,Jackson,Juneau,Jefferson,Kenosha,Kewaunee,Lafayette,La Crosse,Langlade,Lincoln,Manitowoc,Marathon,Marinette,Marquette,Menominee,Milwaukee,Monroe,Oconto,Oneida,Outagamie,Ozaukee,Pepin,Pierce,Polk,Portage,Price,Racine,Richland,Rock,Rusk,Sauk,Sawyer,Shawano,Sheboygan,St. Croix,Taylor,Trempealeau,Vernon,Vilas,Walworth,Washburn,Washington,Waukesha,Waupaca,Waushara,Winnebago,Wood .

8-HR Ozone Summary

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Friday, 
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 57.5 53.6 50.9 47.9 44 39.8 38.2 37.2 37.4 38.7 39.9 42.6 46.6 49.9 51.1 52.9 55.7 57.7 58.5 58.4 57.5 57.7 57.4 56.3
Brown Green Bay UW ppb 39.3 37.8 37.7 37.6 37.5 37.6 38.1 38.8 40 42.1 44.6 47.2 49.8 52.9 55.9 58.9 60.9 62.3 63.3 63.8 64.6 65.2 65.7 65.1
Columbia Columbus ppb 48 45.5 42.5 40.5 38.4 36.4 35.3 35.1 36.5 39 42.6 46.6 50.8 55 58.6 61.4 63 63.7 63.4 62.4 61.3 59.7 58.3 56.3
Dane Madison East ppb 52.4 49.7 47.1 45.2 43.7 42 40.1 39.4 40.4 42.8 45.6 48.2 51.3 54.7 58.1 61 63.1 64.2 64.6 64.6 63.6 62.3 60.4 58.2
Dodge Horicon Wildlife Area ppb 45.9 42.3 38.4 35.7 33.5 32.2 32.2 32.9 34.7 37.4 41.1 45.1 49.5 54 58.2 61.8 64.3 66.2 66.5 65.7 63.9 63.3 63.1 62.1
Door Newport Park ppb 40.3 40.8 41 40.9 40.3 39.8 39.4 38.4 37.2 37.3 37.4 38.9 41.8 45.6 49.8 54.5 57.7 60.8 65.7 69.7 72.7 75.1 76.8 77.8
Eau Claire Eau Claire DOT Sign Shop ppb 52.7 49.9 46.9 44.2 42.6 41.5 40.7 39.7 40.4 42.4 45.1 48.2 50.8 53.2 55.5 57.9 59 59.2 59 58.1 56.9 55.4 54 52.6
Fond du Lac Fond Du Lac ppb 42.1 38.6 36.1 34.6 33.6 33.5 33.9 34.7 36.6 39.8 43.3 47 51.1 55 58.6 62.4 65.3 66.9 66.8 65.9 65.7 65.6 64.8 63.3
Forest Potawatomi ppb 54 53.2 52.2 51.3 50.3 49.3 47.9 46.5 45.6 45.2 45.1 45.5 46 46.5 46.8 45.8 43.2 39.7 35.1 29.7 26.6 25.7 25.2 26.3
Jefferson Jefferson-Laatsch ppb 46.3 42.5 39.2 36.9 34.6 32.9 32.5 33.5 35.8 39 42.7 46.5 50.9 55.4 59.4 62.6 64.8 66 66.1 65.2 64.8 65.1 64.2 62.8
Kenosha Chiwaukee Prairie ppb 37.8 34.6 30.7 27 23.9 21.9 20.4 21 21 22.3 25.3 28.6 33.4 39.1 46.4 54.2 63.2 71.2 76.7 81.1 83.9 84.9 84 81.4
Kenosha Kenosha-Water Tower ppb 35.2 32.5 29.3 26.1 22.7 20.1 18.1 18.5 21.6 27.1 33.8 40.3 47.3 55.9 65.2 71.9 75 76.6 77 77.7 78.2 76.3 73.3 71.1
Kewaunee Kewaunee ppb 37.5 37.9 37.9 37.9 37.3 36.9 37.1 38 38.5 40.1 42.6 45.4 48.6 52.8 57.6 61.8 66 69.6 72.2 75.3 78.6 79.9 78.9 77.7
La Crosse La Crosse DOT ppb 46.7 43.3 39.6 37.1 35.1 33.1 31.9 31.6 32.5 34.5 38 41 44.2 47.7 50.9 53.3 55 56.1 56.6 56.8 56.6 56.2 55.8 55.4
Manitowoc Manitowoc ppb 73.1 75.3 76.9 81 82.7 83.3 83.2 82.2
Marathon Lake Dubay ppb 47.4 46.6 46 45.2 44.5 43.6 42.9 42.6 42.1 42 41.8 42.6 44 46 48.1 50.2 52.3 53.7 55 55.8 55.7 55.5 54.7 53.2
Milwaukee Bayside ppb 32.3 30.7 28.7 27.2 26.6 26.5 28.1 29.9 33.3 37.7 42.5 45.4 51.2 58.1 65.4 72.5 78.3 81.3 82.8 83.6 83.2 81.1 77.7 72.8
Milwaukee Milwaukee-16th St. Health Center ppb 28.9 27.7 26.8 25.4 24.6 24.1 24.4 26.3 28.7 32.8 37.2 42.4 47.4 54.3 60 65.7 70.6 73.3 73.8 73.4 72.2 68.9 66.2 62.5
Milwaukee Milwaukee-UWM UPark ppb 32.6 31.2 29.6 28.5 28.2 28.2 28.6 30.3 33.1 37 40.9 45.7 51.3 58.1 64.9 71.4 76.6 78.7 80.4 81.8 81 78.6 74.6 70.2
Outagamie Appleton ppb 50.4 48.3 46.2 43.7 40.9 39.5 39.1 39.7 40.9 42.6 44.6 46.9 49.8 52.7 55.5 57.7 59.8 61.8 63.5 64.5 64.4 63.3 62.1 62.9
Ozaukee Grafton ppb 33.3 31.9 30.5 29 27.7 27.6 27.7 29 31.5 34.7 38.5 43.7 49.8 56.7 64.4 71.8 78 82.6 84.2 84.1 83.2 80.8 77.8 74
Ozaukee Harrington Beach Park ppb 34.4 33.2 32.9 32.3 30.3 28.5 28 29.2 31.9 33.7 36.3 40.4 46.2 53.2 60.4 67.3 72.5 77.7 80.8 82.6 83.7 83.7 82.7 80.7
Racine Racine-Payne & Dolan ppb 37.1 35.4 32.8 32 29.8 27.9 26.3 26.2 28.1 29.1 32.3 33.9 38.5 44.4 52 59.7 65.1 71.3 76 79.8 81.5 81 78.4 75
Rock Beloit-Converse ppb 41.5 38.3 35.2 33.8 34.7 32.6 32.4 33.2 35.3 39.1 44.1 46.9 53.1 58.4 62.4 65.3 67.2 67.4 67.4 65.4 61.9 57 50.8
Sauk Devils Lake ppb 49.4 48.3 48.5 50.3 49.8 48.9 47.9 47.4 47.8 48.2 48.9 49.7 51.6 53.8 56 57.6 59.2 60.3 60.2 58.3 55.1 51.9 49.3 48.7
Sheboygan Sheboygan-Haven ppb 34.2 33 31.5 30.2 29.2 28.6 29 30.8 33.4 36.4 39.9 43.8 48.1 52.8 58.5 64.6 68.9 73.4 78.2 81 81.5 80.9 78.9 75.7
Sheboygan Sheboygan-Kohler Andrae ppb 38.8 36.5 34.8 33.3 31.9 30.3 28.7 27.9 28.8 30.1 31.5 33.8 36.6 40.4 44.8 49.9 55.3 60.6 65.4 69.1 72.6 75.8 78.1 78.9
Vilas Trout Lake ppb 56.2 54.8 53.1 51.4 48.9 46 43.6 42 40.9 41 42 43.7 46.3 49 51.2 53.1 54.3 54.5 53 50 46.6 43.5 40.9 38.3
Walworth Elkhorn ppb 37.7 33.4 30 27.8 27.2 27.4 28.9 31.3 34.8 39.3 44 49.3 54.1 59.2 62.6 65.7 68.2 69.3 72.3 72.7 70.8 68.6 67 65.2
Waukesha Waukesha-Cleveland Ave. ppb 37.4 34 30.9 28.2 25.4 23.1 22.4 23.1 25.7 29.8 34.8 40.9 47.6 54.3 59.3 63.1 65.8 67.8 71 71.9 71.5 70.4 70.7 71.6