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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 6.6 11 PM 13.9 10 PM
Ashland Bad River Tribal School µg/m³ 7.6 03 PM 8.5 12 AM
Kenosha Chiwaukee Prairie µg/m³ 5.4 12 AM 4.7 11 PM
Sauk Devils Lake µg/m³ 9.2 12 AM 8.4 11 PM
Eau Claire Eau Claire DOT Sign Shop µg/m³ 7.5 11 PM 9.9 10 PM
Brown Green Bay East High µg/m³ 5.5 12 AM 10.1 09 PM
Ozaukee Harrington Beach Park µg/m³ 5.6 12 AM 5.8 10 PM
Dodge Horicon Wildlife Area µg/m³ 7.6 12 AM 8.7 09 PM
Marathon Lake Dubay µg/m³
Dane Madison East µg/m³ 7 12 AM 8.6 10 PM
Dane Madison University Ave. Well #6 µg/m³ 10.3 12 AM 8.7 09 PM
Milwaukee Milwaukee-16th St. Health Center µg/m³ 7.7 12 AM 8.4 11 PM
Milwaukee Milwaukee-College Ave NR µg/m³ 6.6 12 AM 11.4 09 PM
Forest Potawatomi µg/m³ 5.2 12 AM 5.4 11 PM
Grant Potosi µg/m³ 7.5 12 AM 7.9 10 PM
Waukesha Waukesha-Cleveland Ave. µg/m³ 8.2 12 AM 12.1 11 PM