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Noise monitoring program
Active Air Quality Notification
  • An air quality ADVISORY for Unhealthy for Sensitive Groups OZONE levels is in effect from 7/23/2025 13:45 to 7/23/2025 23:00 for these counties: Door,Kenosha,Kewaunee,Manitowoc,Milwaukee,Ozaukee,Racine,Sheboygan .

8-HR Ozone Summary

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Sunday, 
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 22.6 20.9 20.7 21.2 20.9 20.3 18.8 18.1 17.5 18.1 20.4 23.1 26.2 29.3 33.3 36.7 40 41.9 42.5 42.6 42.2 41.4 40.4 39.1
Columbia Columbus ppb 40.4 39.2 38.1 37 36 34.7 33.7 32.5 31.8 31.8 31.9 32.1 32.1 33.1 34 35 35.6 35.7 35.5 35.4 35.5 34.8 33.9 32.8
Dodge Horicon Wildlife Area ppb 36.4 36.2 36.3 36.5 36.1 35.6 35.5 34.5 33.9 33.1 32.6 33 34 34.8 35.5 37 38 38.5 38.8 38.6 38.4 38.2 37.9 37.2
Eau Claire Eau Claire DOT Sign Shop ppb 15.7 13.2 11.8 12.6 16.6 20 24.3 27.8 31.8 34 36.2 37.4 37.4 37.5 37.5 37.3 36.9 36.5 36 35.5 35 34.2 33.3 32.6
Forest Potawatomi ppb 40 39.9 39.8 39.7 39.7 39.6 39.6 39.7 39.9 40.1 40.2 40.4 40.8 41.4 41.8 41.7 41.4 40.9 40.9 41 40.9 40.7 40.5 40.7
La Crosse La Crosse DOT ppb 29.5 28.8 29.6 31.9 33.2 34.7 35.4 35.9 36.1 35.7 35.2 34.4 34 33.8 33.5 33.1 32.8 32.7 32.4 32.2 31.8 31.1 30.6 30.3
Ozaukee Harrington Beach Park ppb 33.9 33 32.1 31.8 30.8 30.3 29.3 28.5 27.7 26.7 27.8 29 31 32.5 34.4 36.5 38.6 41 41.6 41.8 42 42.1 41.7 40.8
Sauk Devils Lake ppb 37.8 36.9 36.3 36 35.7 35.4 34.8 34.2 33.5 32.8 32.1 31.7 31.5 31.3 31.2 31.2 31.3 31.5 31.6 31.1 30.4 29.4 28.5 27.5