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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 7/5/2025 08:00 to 7/5/2025 23:00 for these counties: Kenosha,Manitowoc,Milwaukee,Ozaukee,Racine,Sheboygan .

  • 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.

Highest PM2.5

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Saturday, 
County Site Units 24-Hour Hour of Day 1-Hour Hour of Day
Outagamie Appleton µg/m³ 12.9 04 PM 15.9 10 AM
Ashland Bad River Tribal School µg/m³ 9.1 12 AM 6.2 12 AM
Kenosha Chiwaukee Prairie µg/m³ 16.9 08 PM 24.4 07 PM
Sauk Devils Lake µg/m³ 12.6 04 PM 16.2 03 PM
Eau Claire Eau Claire DOT Sign Shop µg/m³ 15.4 08 AM 21.9 04 AM
Brown Green Bay East High µg/m³ 13.3 04 PM 24.9 04 PM
Ozaukee Harrington Beach Park µg/m³ 14.1 03 PM 20.1 01 PM
Dodge Horicon Wildlife Area µg/m³ 11.6 05 PM 16 07 AM
Marathon Lake Dubay µg/m³
Dane Madison East µg/m³ 14 05 PM 19.1 07 AM
Dane Madison University Ave. Well #6 µg/m³ 14.5 05 PM 19.3 07 AM
Milwaukee Milwaukee-16th St. Health Center µg/m³ 17.5 06 PM 23.8 04 PM
Milwaukee Milwaukee-College Ave NR µg/m³ 14.1 05 PM 18.8 04 PM
Forest Potawatomi µg/m³ 9.6 12 AM 11 08 AM
Grant Potosi µg/m³ 17.4 03 PM 20.8 05 AM
Waukesha Waukesha-Cleveland Ave. µg/m³ 14.9 07 PM 19.7 11 AM