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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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Sunday, 
County Site Units 24-Hour Hour of Day 1-Hour Hour of Day
Outagamie Appleton µg/m³ 12 01 AM 14.1 11 PM
Ashland Bad River Tribal School µg/m³ 7.8 11 AM 14.3 09 AM
Kenosha Chiwaukee Prairie µg/m³ 6.1 11 PM 15.6 11 PM
Sauk Devils Lake µg/m³ 9.4 12 AM 16.8 06 PM
Eau Claire Eau Claire DOT Sign Shop µg/m³ 12.7 01 AM 18.4 11 AM
Brown Green Bay East High µg/m³ 12.5 01 AM 14.2 09 PM
Ozaukee Harrington Beach Park µg/m³ 8.1 12 AM 12.6 08 PM
Dodge Horicon Wildlife Area µg/m³ 8.6 12 AM 15.3 07 PM
Marathon Lake Dubay µg/m³
Dane Madison East µg/m³ 8.1 12 AM 15.3 08 PM
Dane Madison University Ave. Well #6 µg/m³ 8.8 12 AM 18.7 08 PM
Milwaukee Milwaukee-16th St. Health Center µg/m³ 8.3 12 AM 18.3 09 PM
Milwaukee Milwaukee-College Ave NR µg/m³ 9.1 12 AM 16.9 10 PM
Forest Potawatomi µg/m³ 10.4 06 PM 13.4 12 AM
Grant Potosi µg/m³ 8.6 11 PM 21.3 10 PM
Waukesha Waukesha-Cleveland Ave. µg/m³ 7.8 12 AM 17.4 09 PM