-
Noise monitoring program
Active Air Quality Notification
  • An air quality ADVISORY for Unhealthy for Sensitive Groups OZONE levels is in effect from 6/29/2025 14:00 to 6/29/2025 23:00 for these counties: Door,Kenosha,Kewaunee,Manitowoc,Milwaukee,Ozaukee,Racine,Sheboygan .

8-HR Ozone Summary

Filter by County:
Filter by Site:
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 45.6 40.3 35.7 31.4 27.6 24.7 24.8 26.2 28.7 30.8 32.8 36.4 40.9 46.9 51.2 54.6 56.5 57.1 56.5 54.5 52.3 49.4 45.7 41.7
Brown Green Bay UW ppb 55.6 53.8 52.4 50.2 45.7 41 38.7 38.5 39.4 41.6 43.8 47.6 53.8 60.2 64.4 66.5 67.4 67 65.7 63.1 59.5 55.4 50.7 45.6
Columbia Columbus ppb 60.7 57.9 55.8 54.6 52.5 50.5 48.6 47.7 48.2 50.2 53.3 56.3 60.2 64.3 68.8 71.8 73.7 75 74.8 73.9 72.3 69.9 67.6 65.2
Dane Madison East ppb 57.7 53.3 48.8 44.1 39.8 38.5 37.6 37.6 39.9 43.7 48.4 54.4 60.9 65.1 68.4 71.2 73.2 74.3 74.9 74.5 72.6 69.9 66.8 63.6
Dodge Horicon Wildlife Area ppb 57.7 54.3 52 49.7 46.5 43.2 40 39.1 40.9 43.4 45.5 49.1 53.7 58.2 63.2 67.3 70.2 71.4 71.2 69.9 67.6 64.9 61.7 58.4
Door Newport Park ppb 65.3 66.3 67.2 67.6 67.7 64.3 60.8 56.8 53.7 52.5 51.9 52.9 55.2 58.1 60.5 63.3 65.8 66.7 66.2 64.3 62 58.7 56.4 54.3
Eau Claire Eau Claire DOT Sign Shop ppb 32.6 24.8 16.9 11.1 7.3 7.7 10.1 14.8 20.3 27.2 35.7 44.7 53.2 61.2 66.8 70.2 73.3 74.8 74.9 72.9 70 66.9 63.2 60.3
Fond du Lac Fond Du Lac ppb 55.2 55.4 56.1 56 54.4 50.5 46.7 44.1 44.2 44.9 46.5 48.8 52.2 57.7 63.4 67.1 68 67.1 65.5 63.2 60.6 57.2 53.8 50.7
Forest Potawatomi ppb 62.9 62.9 62.7 62 60.5 59.4 58.3 57.4 56.8 56.1 55.9 56.7 57.2 56.8 57.2 58.2 58.5 58.6 57.8 55.3 53.5 51.7 49.1 46.7
Jefferson Jefferson-Laatsch ppb 52.4 47.3 42.3 37.7 32.8 27.5 25.9 26.7 29.9 34.6 40.1 46.3 52.7 59.6 64.7 68.2 70.2 71 70.9 69.6 68.1 65.2 61 56.3
Kenosha Chiwaukee Prairie ppb 62.5 59.3 55 50.8 46.1 42 41.4 44.4 47.4 49.6 52.9 56 60.2 63.7 65.1 65.8 66.4 66.4 67.3 67.9 67.2 65.2 62.2 57.2
Kenosha Kenosha-Water Tower ppb 59.1 54.8 50.1 45.3 40 36.7 36.7 37.1 38.3 41.7 45.9 50.4 55.2 59.7 61.7 63.5 65.1 65.1 64.8 64.2 63.6 63.2 62.1 60.5
Kewaunee Kewaunee ppb 69.8 70.3 69.2 66.7 65.2 63.9 62.2 58.9 57.3 56.9 57.9 60.1 61.4 62.7 64.2 66.8 67.7 67.6 67.2 65.6 62.8 60.2 56.9 53.5
La Crosse La Crosse DOT ppb 47.7 42.1 36.5 32.7 29.5 26.8 26.4 27.9 31.5 35.9 41.5 47.7 53.9 60 64.7 68.2 70.1 70.9 70.5 69 66 61.8 56.9 51.5
Manitowoc Manitowoc ppb 49.3 44.5 39.7 34.8 31.2 28.7 27.8 29.2 31.3 33.8 37.1 41.3 45.7 49.8 52.6 54.3 55.8 56.7 56.7 55.7 53.9 51.7 48.1 43.1
Marathon Lake Dubay ppb 65 64.3 63 60.8 58 54.8 51.8 49.5 48.3 46.6 45.7 64.8 64.9 65.6 64.2 62.7 62
Milwaukee Bayside ppb 54.4 48.2 42.5 37.1 30.8 25 23.6 24.9 28.4 32.9 37.8 42.8 49.3 55.4 59.3 62.1 63.1 63.6 63.7 62.9 60.8 57.9 54.2 49.1
Milwaukee Milwaukee-16th St. Health Center ppb 52.8 50.7 48.9 46.9 44.4 41.7 40.5 40.8 40.5 40.8 41.7 43.2 45.6 48.2 49.9 51.1 52.2 52.7 51.9 49.5 46.3 43.2 39.7 35
Milwaukee Milwaukee-UWM UPark ppb 60.1 55.8 52.2 48.2 43.1 38.3 35.6 35.7 37.9 40.5 43.1 46.8 51.9 56.5 60.5 62.7 63 62.6 61.7 59.8 57.5 55.3 52.7 49.2
Outagamie Appleton ppb 49.8 45.5 42.8 40.5 38.9 37.1 36 35.8 37.9 41.2 44.1 48 52.3 57.2 62 67 69.8 71.3 71.9 69.5 66.7 62.4 57.6 52
Ozaukee Grafton ppb 64.7 62.4 60.6 56.5 52.3 48.7 46.3 45.4 44.7 44.7 45.7 49.6 53.7 58 61.4 63.8 65.4 66.1 66 65 63.8 59.6 54.8 50.6
Ozaukee Harrington Beach Park ppb 58.7 56.3 54.3 52.6 51 49.5 48.1 48.1 48.6 49.5 50.8 52.5 54.7 57 59.4 61.6 63.2 63.8 63.6 62.8 62.4 62 60.9 58.8
Racine Racine-Payne & Dolan ppb 66.9 65.9 65.6 65.3 64.5 63.3 62.8 63 62.1 61.4 60.7 60.1 60.3 60.9 61.9 62.8 63.7 64.7 65 64 62.5 60.9 58 54
Rock Beloit-Converse ppb 55.5 49.5 44 39.2 33.7 30.5 29.4 31.8 35.7 40.9 46.6 52.4 59.7 65.6 70.2 73.1 75.1 76 76.1 75.1 73.4 70.6 66.2 60.8
Sauk Devils Lake ppb 56.9 53.4 50.5 48.6 46.6 46.3 45.9 45.1 45.9 48.3 51.4 55.1 58.7 62.4 67.1 70.4 73 73.5 71.8 68.1 65 62.2 59.5 56.5
Sheboygan Sheboygan-Haven ppb 59.4 57 55.5 53.3 51.1 49.2 48.1 47.9 47.8 48.4 49.7 51.9 54.4 57.5 59.9 61.1 62.1 62.6 61.5 60.6 59.7 57.7 55 51
Sheboygan Sheboygan-Kohler Andrae ppb 68.2 65.9 64.2 62.3 59.5 56.7 53.5 52 51.6 52.7 53.6 54.9 57.5 60.8 63.9 65.6 66.4 66.9 67.2 66.9 66.6 65.5 62.9 60.2
Vilas Trout Lake ppb 62.3 60.7 59.5 59.5 59.1 57.3 56.8 55.3 54.5 55.2 56.3 56.4 57.1 60.6 61.6 62.7 63.2 63 61.6 61.7 62.7 60.7 58.7 57.6
Walworth Elkhorn ppb 62.7 60.2 57.7 55 51.3 47.9 46.2 45.9 47.4 49.3 52 55.4 59.3 63.6 67 69.4 70.7 71.4 71 69.5 67.5 64.7 61.6 58.5
Waukesha Waukesha-Cleveland Ave. ppb 59.5 56 52.1 48.2 43.5 38.9 37.5 38.3 39.7 43.4 47.2 51.3 56.3 62.1 65.5 67.4 68 67.2 66.2 64.1 61.6 58.4 54.6 50.1