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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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Saturday, 
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 52.8 48.9 45.5 42.8 40.3 38.3 37.5 37.4 37.8 38.2 38.4 38.4 38.4 38.2 37.8 37.3 37.7 37.6 37 35.3 33.2 30.9 29.8 28.8
Brown Green Bay UW ppb 63.7 62 60.1 59.2 58 56.8 55.4 54.6 54.9 55.3 56 56.5 57.2 57 57.5 58.1 58 57.6 56.8 55.3 53.2 50.7 47.7 44.4
Columbia Columbus ppb 54.3 52.3 50.4 47.8 45.4 43.9 42.2 41.5 40.8 40.4 40.8 41.8 42.9 44 45.4 46.3 47.1 47.1 46.7 45.5 43.4 40.3 37.5 34.5
Dane Madison East ppb 55.2 52.2 49.1 46.3 45.1 44.3 44.1 43.5 43.2 43.7 44.5 46 47.1 47.8 48.1 48.8 49.9 50.1 49.8 48.9 47.4 46.6 45.7 44.5
Dodge Horicon Wildlife Area ppb 60.9 59.6 59.2 59.2 58.9 56.7 53.7 51.2 49.2 47.2 46.3 46.1 46.1 46.5 46.9 47.6 48.8 49.1 48 46.3 45.1 43.6 41.7 39
Door Newport Park ppb 79.1 79.3 77.6 76.7 75.4 73.5 71.5 69.8 68.9 68.5 67.7 66.3 65.5 63.9 62.8 62.3 62.4 62.2 63.1 63.6 63.8 64.6 64.5 63.1
Eau Claire Eau Claire DOT Sign Shop ppb 50.2 48 45.8 44.2 41.9 39.9 36.8 34.2 32.7 31.2 30.8 30.6 31.9 33.3 35.3 36.9 38.5 40.6 41.9 42.4 41.4 40.3 39.9 39.7
Fond du Lac Fond Du Lac ppb 61.3 59.4 58.8 58.6 56.6 54.2 52 50 48.9 48.8 49.2 49.5 50.4 51 51.5 51.9 51.8 50.8 48.8 46.5 44.5 43.1 41.7 40.1
Forest Potawatomi ppb 28.7 32.1 36.7 41.6 44.4 45.1 46.1 46.8 47.9 48.6 49 49.6 48.9 47.9 46.6 45.6 44.2 43.1 41.7 40.1 39.3 38.6 37.8 36.4
Jefferson Jefferson-Laatsch ppb 60.7 57.8 55.3 53.3 50.9 47.1 44.5 43 41.8 40.8 40.5 41.5 42.4 44 45.7 46.3 47.3 48 47.8 46.3 43.7 40.5 36.2 32.5
Kenosha Chiwaukee Prairie ppb 78.2 74.8 73 70.5 68.7 65.4 60.7 55.3 50.5 47.1 45.2 44.7 43.9 44.8 47.6 50.9 53.5 55.1 55.4 55.7 54.5 52.4 48 45.1
Kenosha Kenosha-Water Tower ppb 70.5 70.1 69.2 68 66.7 64.5 60.7 55.7 51 47.4 45.8 44.8 44.4 44.7 46.9 49.8 52.2 53.8 53.9 53.7 52.4 50.6 46.6 43
Kewaunee Kewaunee ppb 75.8 73.4 71.4 69 66.8 65.2 64.6 64.1 64.3 63.9 63.3 63 61.3 59.9 59.3 59.4 59.2 59.7 60.2 59.8 59.2 57.8 55.1 50.9
La Crosse La Crosse DOT ppb 55.1 54.5 53.7 52.9 51.8 49.9 47.5 45.2 43.3 42 41 39.9 39.4 40.3 41.7 43.1 44.2 44.4 44 43.4 42.1 40.2 38.5 37.4
Manitowoc Manitowoc ppb 80.1 76.2 72.5 70.7 68.3 66.9 65.8 64.7 63.7 64.3 64 62.3 62 61.1 60.4 60.1 59.7 59.9 60.5 60.6 59.5 57.6 53.4 47.9
Marathon Lake Dubay ppb 51.2 49.2 47.6 45.8 44.3 42.7 41.6 41.2 41.6 42.2 42.9 43.6 44.1 44.7 45.4 45.3 44.8 44.6 43.8 42.9 42 40.6 39.2 37.7
Milwaukee Bayside ppb 68.5 66.7 66.6 65.9 65.3 64.5 63 61.5 59.1 56.8 55.4 54.7 54.5 54.4 54.8 56.1 57.8 58.3 57.6 56 53.7 51 47.1 42.2
Milwaukee Milwaukee-16th St. Health Center ppb 59.3 57.4 56.9 56.3 56.3 56 54.7 52.6 49.4 46.6 45.3 45.2 45.4 45.5 46 47.5 49.3 50.1 49.6 48.2 46.5 44.8 43 40.7
Milwaukee Milwaukee-UWM UPark ppb 66.5 65.5 64.4 63.1 62.6 61.7 60.6 58.9 56.3 54 53.1 52.6 52.5 52.6 52.7 54 55.7 56.1 55.5 54.3 52.2 49.8 48.1 45.7
Outagamie Appleton ppb 63.1 62.3 60.6 58.7 56.4 55.8 55.9 53.9 51.6 50.4 50.8 52.3 55.2 56.7 56.9 56.6 56 54.6 52.2 49.8 46.9 43.7 40.7 38.1
Ozaukee Grafton ppb 69.9 66.1 65 64.3 63 60.9 57.6 53.7 50.8 49.3 48.7 48.8 49.3 51 53 55.8 57.9 58.8 58.2 56.4 53.6 50.4 47.7 44.5
Ozaukee Harrington Beach Park ppb 78.3 75.6 73.4 71.5 69.8 67.6 65.1 63.6 60.8 58.2 56.2 55.3 54.4 53.5 53.7 53.5 54.6 56.2 56.9 56.3 55.3 53.2 49.8 46
Racine Racine-Payne & Dolan ppb 72.7 71.1 69.6 67.4 65.7 64.1 61.4 57.7 53.2 50.1 48.4 48.1 48 48.5 50.4 52.8 55.3 56.5 57 57.1 56.8 55.7 53.2 49.8
Rock Beloit-Converse ppb 44.1 37.8 33.6 30 28.7 28.8 29.3 30 31.5 34.3 36.2 38.8 41.2 43.2 45.8 48.6 50.6 50.6 49.6 48 45.7 43.2 40 37.2
Sauk Devils Lake ppb 47.4 46.5 46.1 47.1 49 50.4 50.7 49.4 48.4 47 45.7 44.4 43.6 43.9 45 45.4 45.8 45.3 44.8 43.2 40.7 38.3 36.8 35.1
Sheboygan Sheboygan-Haven ppb 73.3 69.5 64.6 61.8 60.5 60.2 59.2 58 56.1 55.1 55 55.6 56.3 55.9 56.2 57.2 58.3 58.9 58.6 56.9 54.8 52.3 48.7 44.3
Sheboygan Sheboygan-Kohler Andrae ppb 78.7 78 76.5 75.5 74 71.8 70 68 66 65 64.9 63.8 62.1 61 60.4 60.5 60.7 59.8 58.4 57.5 57.3 56.6 54.8 51.1
Vilas Trout Lake ppb 36.9 36.2 36.9 38.1 39.6 41.6 43.6 44.9 45.4 45.9 46 46.2 46.1 45.4 44.5 43.9 43.7 42.6 41.5 40.8 40.5 39.7 37.8 36.2
Walworth Elkhorn ppb 63 60.8 55.3 51.1 47.9 45.1 42.6 40.2 37.8 38 39 40.6 44 46.6 48.2 49 49.6 48.3 46.9 45.4 42.9 40.6 39.3 37.8
Waukesha Waukesha-Cleveland Ave. ppb 71.5 70.8 68.1 66.7 66.6 66.1 63.9 59.3 55.3 51.9 50.3 49.2 47.8 46.7 46.4 47.6 48.7 49.2 48.1 46 43.8 41.9 39.3 37