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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 7/4/2025 08:00 to 7/4/2025 23:00 for these counties: Kenosha,Milwaukee,Ozaukee,Racine .

  • Increases in firework displays over the holiday weekend may lead to short-lived, local spikes in PM2.5 concentrations. Visit https://dnr.wisconsin.gov/topic/AirQuality/Fireworks.html to learn more about air quality and health effects of fireworks.

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 22.1 21.5 21.6 22.7 23.6 23.9 24.1 24.3 24.7 25.4 26.3 27.3 28.5 29.7 30.9 32.1 33.4 34.6 35.4 35.9 36.2 36.4 36.3 36.2
Dodge Horicon Wildlife Area ppb 20.7 19.5 18.6 17.8 17.3 17.1 16.9 16.9 17.7 19.3 21.5 24.1 27 29.8 32.7 35.4 37.1 37.8 37.6 36.9 35.8 34.6 33.5 32.4
Forest Potawatomi ppb 29.8 29 28.1 27.3 26.7 26.4 26.2 26.2 26.6 27.4 28.7 30.2 31.9 33.5 35 36.4 37.4 38.3 38.7 39 39.1 39 38.8 38.5
Milwaukee Milwaukee-UWM UPark ppb 15.4 15.7 16.1 16.5 16.4 15.9 14.7 14 14.9 16.6 18.7 21.4 24.3 27.6 31.4 34.3 35.3 35.3 34.4 33.3 31.6 29.5 27.9 26.5