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Noise monitoring program
Active Air Quality Notification
  • An air quality ADVISORY for Unhealthy PM2.5 levels is in effect from 8/3/2025 12:00 to 8/4/2025 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,Jefferson,Juneau,Kenosha,Kewaunee,La Crosse,Lafayette,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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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 56.3 55.7 54.2 52.5 51.8 49.1 46.5 44.5 43.4 43.3 44.1 45.4 46.3 48 50.1 51.4 52.4
Brown Green Bay UW ppb 49 49.2 49.5 49 48.4 46.4 45 44.8 45.5 46.7 48.2 51.1 52.1 54.9 56.9 58.6 60.1 61.6 62.8 63.2 63.2 62.3 61.5 61.2
Columbia Columbus ppb 49.2 47.7 46.8 46.3 45.9 46 46.1 46.5 47.3 48.4 49.8 51.3 52.7 54.6 56.7 58.7 60.2 60.9 62 62.7 62.5 61.9 61.2 60.2
Dane Madison East ppb 51.2 50 49.3 49 49.1 49.4 49.5 49.7 49.8 50.1 50.3 50.8 51.7 53.3 55 57 58.8 61.1 63.2 64.9 65.5 65.2 64.7 63.8
Dodge Horicon Wildlife Area ppb 55.5 53.5 51.9 50.2 49.3 47.9 46.7 46.4 47.1 48.5 50.5 53.2 54.4 56.6 58.8 61 62.6 64.1 65 65.7 66.4 66.4 65.6 63.9
Door Newport Park ppb 62.8 65 66.1 65.7 66.1 64 61.3 57.9 54.7 52.3 51.1 51.8 53.6 56.8 60.7 65.2 69.8 74.4 78.4 81.2 83 83.1 81 78.2
Eau Claire Eau Claire DOT Sign Shop ppb 55.8 53.9 51.3 47.7 46.4 44.2 42.5 41.6 41.2 42 44.1 47.7 48.9 51.3 53.7 55.8 57.5 58.7 59.3 59.3 58.8 57.7 56.4 54.6
Fond du Lac Fond Du Lac ppb 55.5 53.7 52.1 50.9 50.6 49.3 48.5 48.1 48.2 48.9 50.4 52.5 53.8 56.2 57.8 59.5 61.3 62.6 63.3 63.6 63.8 63.9 63.6 62.7
Forest Potawatomi ppb 51 52 52.6 52.4 51.9 51.3 50.5 50.3 49.9 48.7 47.5 46.8 47 48.1 50.1 50.9 51.2 52.2 53 53.5 53.9 53.7 53.1 52.7
Jefferson Jefferson-Laatsch ppb 51.6 50 48.8 47.9 48.1 48.3 48.8 49.4 50.1 51.3 52.8 54.6 55.6 57.3 59 60.8 63.5 65.8 67 67.2 66.8 65.8 64.8 63.4
Kenosha Chiwaukee Prairie ppb 52.9 49.1 46.5 44.2 41.4 39.4 40.9 44.6 48.3 52 54.5 58.5 62.7 69.9 77.1 82.7 87.7 90.2 91.5 91 88.2 84.9 81.1 76.8
Kenosha Kenosha-Water Tower ppb 52.6 49.7 47.3 45.6 43.6 42.9 44.7 47.8 50.2 52.6 55 57.3 58.9 62.7 65.7 67.8 70 71.7 72.5 72.6 72 70.8 69 67.3
Kewaunee Kewaunee ppb 56.2 58 57.6 56.6 56.3 54.8 53.4 50.4 48.9 48.1 49.6 51.1 52 54.7 58.7 63.6 66.5 70 74.1 77.9 82 82.5 80.2 76.9
La Crosse La Crosse DOT ppb 52.3 50.9 49.5 48.2 47.8 46.5 45.3 44.4 43.4 43.1 43.7 44.7 46 48 50 51.7 53 53.8 54 53.4 52.7 51.5 50.1 49.1
Manitowoc Manitowoc ppb 54.7 56.6 57 55.8 55 53.8 54.1 53.4 51.5 50.1 50.1 52.6 54.8 58.1 62.5 68.3 74.6 80.2 86 91.3 95.8 98.6 97.4 93.4
Marathon Lake Dubay ppb 51.9 50.7 49.3 48.1 47.6 46 44.2 43.3 42.9 42.9 43.3 43.9 44.6 45.9 47.6 48.9 50.3 51.4 52.3 52.7 52.8 53.1 53.3 53.1
Milwaukee Bayside ppb 56.9 55.3 53.5 51.4 50.8 51.3 52.6 52.6 52.6 53.4 54.6 56.8 58.2 62.2 67.1 71.7 77 80.3 82.7 84.3 84 81.4 77.5 73.1
Milwaukee Milwaukee-16th St. Health Center ppb 51.8 50.7 49.9 50.1 50.2 50.8 52 52.2 52.3 53 53.9 54.6 55.3 57 59.4 62.2 65 67.1 68.7 69.5 69.5 68.1 65.9 63.1
Milwaukee Milwaukee-UWM UPark ppb 57 55.9 54.5 53.9 53.5 54.1 55.5 55.5 55.5 56.5 57.9 59.1 60.1 63.1 66.6 69.8 73.9 76.3 78 79.2 79 77.1 73.8 70.4
Outagamie Appleton ppb 56.4 54.9 52.9 50.9 49.7 47.8 46.6 46.3 46.6 47.1 48.1 49.2 49.9 51.7 53.8 55.6 57.3 59.2 61.1 62.6 63.2 63.7 63.2 62.7
Ozaukee Grafton ppb 56.7 55.1 53.8 52.5 51.9 52.2 52.9 52.4 52 52 52.4 53.1 54 56.2 59.6 63.3 66.9 69.9 71.8 73.4 73.6 71.4 67.9 64.5
Ozaukee Harrington Beach Park ppb 59.2 57.2 54.3 51.7 49.9 46.6 46.3 46.3 46.8 47.5 49.2 51.6 54.2 59.7 65.9 72.9 79.1 85.3 88.9 90.3 89.6 87.3 82.7 76.5
Racine Racine-Payne & Dolan ppb 58.9 56.6 54.4 52.3 50.3 47.9 48 49.9 51.9 53.7 55.5 58.4 61.4 68 74.6 80.6 86.3 90.7 92.2 91.7 89.1 84.8 79.5 73.9
Rock Beloit-Converse ppb 53.7 51.5 49.7 48.9 48.4 47.7 47.4 47.6 48.9 50.6 52.5 54.7 56.1 59.2 62.2 64.6 66.6 68.4 69.7 70 69.5 67.9 65.5 63.5
Sauk Devils Lake ppb 56.7 55.7 55.1 54.5 54 52.9 51.8 50.8 50.1 49.7 49.5 49.4 50 50.9 52.3 54.2 56.2 57.7 58.8 60.2 61.8 62.6 62.5 62.2
Sheboygan Sheboygan-Haven ppb 55.8 53 49.9 47.2 45.9 45.3 45.8 46 46.4 47.8 50.2 52.9 53.8 55.5 57.1 60.1 63.1 64.9 66.1 66.7 66.6 66.1 65.1 61.8
Sheboygan Sheboygan-Kohler Andrae ppb 57.3 57.8 57.3 55.9 54.8 52.6 50.4 49.1 48.5 49.2 51.2 54.7 57 61.3 66.7 73.3 79.8 85.9 90.4 93.8 96.5 96.2 94.2 89.3
Vilas Trout Lake ppb 48.9 48.7 48.4 47.7 47.7 46.5 45.4 44.9 44.6 44.7 45.3 46.3 47.2 48.9 50.7 52.2 53.5 54.5 55.4 56 56.2 56.3 56 55.4
Walworth Elkhorn ppb 51.5 50.1 49.3 49.2 49.7 49.7 49.1 49.4 50.5 52 54.1 56.6 58.1 61.4 64.2 66.7 68.9 70.5 71.4 71.2 70.1 67.9 65 61.6
Waukesha Waukesha-Cleveland Ave. ppb 51.5 50.5 49.8 49.4 49.2 49.3 50.1 50.9 51.2 52 52.8 53.6 54.5 56.5 58.9 61.4 63.9 66.1 68.2 69.9 70.4 70.2 68.3 65.9