Active Weather Alerts
Air Quality Alert
Issued: 4:09 PM Jul. 24, 2025 – National Weather Service
...AIR QUALITY ADVISORY FOR THURSDAY JULY 24 AND FRIDAY JULY 25, 2025... The Michigan Department of Environment, Great Lakes, and Energy (EGLE) has issued an Air Quality Advisory for elevated levels of fine particulates (PM2.5) in the Upper Peninsula of Michigan starting at 3 PM EDT Thursday. Pollutants are expected to be in the Unhealthy for Sensitive Groups (USG, Orange AQI) range. The Air Quality Advisory is in effect for the following Michigan Counties, Keweenaw, Menominee, Dickinson, Iron, Marquette, Baraga, Northern Houghton, Southern Schoolcraft, Ontonagon, Delta, Gogebic, Luce, Alger, Northern Schoolcraft, and Southern Houghton. Smoke from Canadian wildfires will move into the Upper Peninsula this afternoon. Models then show the plume moving southeast, reaching the northern portions of the Lower Peninsula early Friday morning and continuing towards the central portion of the state. As the smoke moves in, we anticipate PM2.5 to increase into the Unhealthy for Sensitive Groups (USG) range. There is a possibility that hourly levels could reach the Unhealthy (red AQI) range for a short period of time. It is recommended that, when possible, you avoid strenuous outdoor activities, especially those with heart disease and respiratory diseases such as asthma. Monitor for symptoms such as wheezing, coughing, chest tightness, dizziness, or burning in nose, throat, and eyes. Reduce or eliminate activities that contribute to air pollution, such as outdoor burning, and use of residential wood burning devices. Keep windows closed overnight to prevent smoke from getting indoors and, if possible, run central air conditioning with MERV-13 or higher rated filters. For up-to-date air quality data for Michigan visit the MiAir site at https://air-egle.hub.arcgis.com. For further information, please see EPA's Air Now site for up-to- date air quality data at https://www.airnow.gov. For further health information, please see MDHHS' Wildfire Smoke and Your Health site at https://www.michigan.gov/mdhhs/safety-injury- prev/environmental-health/your-health-and-wildfire-smoke.
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