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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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Wednesday, 
County Site Units 24-Hour Hour of Day 1-Hour Hour of Day
Outagamie Appleton µg/m³ 9.7 12 AM 13.7 02 PM
Ashland Bad River Tribal School µg/m³ 7.8 12 AM 9.4 10 PM
Kenosha Chiwaukee Prairie µg/m³ 9.2 07 AM 9.2 09 AM
Sauk Devils Lake µg/m³ 10.2 12 AM 15.8 12 PM
Eau Claire Eau Claire DOT Sign Shop µg/m³ 9.8 12 AM 9.8 11 PM
Brown Green Bay East High µg/m³ 9.2 04 AM 10.1 04 PM
Ozaukee Harrington Beach Park µg/m³ 9.2 05 AM 13.3 12 PM
Dodge Horicon Wildlife Area µg/m³ 10.2 11 PM 12.9 05 PM
Marathon Lake Dubay µg/m³
Dane Madison East µg/m³ 9.9 12 AM 10.6 10 AM
Dane Madison University Ave. Well #6 µg/m³ 12 03 PM 20.9 11 AM
Milwaukee Milwaukee-16th St. Health Center µg/m³ 10.9 03 AM 13 11 AM
Milwaukee Milwaukee-College Ave NR µg/m³ 10.3 02 AM 9.8 10 AM
Forest Potawatomi µg/m³ 6.8 12 AM 6.9 11 PM
Grant Potosi µg/m³ 11.4 12 AM 11.1 10 PM
Waukesha Waukesha-Cleveland Ave. µg/m³ 11.4 07 PM 16.5 12 PM