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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 5.4 02 AM 8.7 05 PM
Ashland Bad River Tribal School µg/m³ 5 12 AM 1.7 12 AM
Kenosha Chiwaukee Prairie µg/m³ 7.4 06 PM 9.9 11 AM
Sauk Devils Lake µg/m³ 4 04 PM 4.7 12 AM
Eau Claire Eau Claire DOT Sign Shop µg/m³ 4.7 12 AM 4.2 06 PM
Brown Green Bay East High µg/m³ 6 01 AM 8.8 04 PM
Ozaukee Harrington Beach Park µg/m³ 6.2 12 AM 6.8 04 PM
Dodge Horicon Wildlife Area µg/m³ 5.7 07 PM 8.5 02 PM
Marathon Lake Dubay µg/m³
Dane Madison East µg/m³ 4.1 06 PM 6 07 PM
Dane Madison University Ave. Well #6 µg/m³ 4.2 04 PM 6.2 12 PM
Milwaukee Milwaukee-16th St. Health Center µg/m³ 8 05 PM 10 02 PM
Milwaukee Milwaukee-College Ave NR µg/m³ 7 05 PM 11.2 03 PM
Forest Potawatomi µg/m³ 4.1 12 AM 5 03 AM
Grant Potosi µg/m³ 3.4 01 PM 4.4 03 AM
Waukesha Waukesha-Cleveland Ave. µg/m³ 7 06 PM 8.1 01 AM