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Air Quality Alert
Issued: 9:14 AM Aug. 1, 2025 – National Weather Service
The Wisconsin Department of Natural Resources has issued an Air Quality Advisory for the following counties: Brown, Calumet, Door, Florence, Forest, Kewaunee, Langlade, Lincoln, Manitowoc, Marathon, Marinette, Menominee, Oconto, Oneida, Outagamie, Portage, Shawano, Vilas, Waupaca, Waushara, Winnebago, Wood. WHAT...The PM2.5 AQI is expected to reach the Unhealthy level. WHERE...All of Wisconsin WHEN...Until noon Friday, August 1 Precautionary/Preparedness Actions: Sensitive groups: Consider rescheduling or moving all activities inside. Go inside if you have symptoms. People with asthma: Follow your asthma action plan and keep quick-relief medicine handy. People with heart disease: Symptoms such as palpitations, shortness of breath, or unusual fatigue may indicate a serious problem. If you have any of these, contact your health care provider. Everyone else: Keep outdoor activities shorter and less intense. Go inside if you have symptoms. Additional Details: Canadian wildfire smoke will continue to impact Wisconsin`s surface air quality over the next several days. Widespread Unhealthy (Red) AQI for PM2.5 is expected across Wisconsin, with NowCast AQI values in the Very Unhealthy (Purple) category possible. Conditions have improved some across northeast Wisconsin early this morning as surface visibilities have improved, but smoke is expected to filter back into the region today and tonight and linger into the weekend. However, Unhealthy for Sensitive Groups (Orange) to Unhealthy (Red) AQI will remain possible through the weekend. Conditions will be reevaluated on a day-to-day basis through the weekend, including updates to the forecast and any associated Air Quality Advisories. For more information on current air quality, please see: https://airquality.wi.gov
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