Green Bay, Wis. – Wildfire smoke from Canada is choking skies across Wisconsin, triggering an Air Quality Advisory for the entire state and creating potentially dangerous conditions, especially for sensitive groups. Visibility could also drop overnight into Tuesday morning as patchy fog adds another layer of risk for early commuters.
According to the Wisconsin Department of Natural Resources and the National Weather Service in Green Bay, PM2.5 pollution levels are expected to reach “Unhealthy for Sensitive Groups” to “Unhealthy” by Tuesday morning. The advisory remains in effect through noon Tuesday, covering every county in the state.
Areas across northeast and north-central Wisconsin—particularly Brown, Outagamie, Marathon, Waupaca, and Vilas counties—may see the heaviest smoke, with calm conditions trapping pollutants near the surface.
Residents with asthma, heart disease, or other respiratory issues are urged to limit time outdoors. Everyone is advised to keep outdoor activities brief and go indoors if symptoms develop. Visibility may drop to less than a quarter mile in rural areas due to fog.
No thunderstorms are expected until late Wednesday night, with a slight chance for showers by early Thursday. Until then, hot and hazy conditions will continue across the state.
Five-Day Forecast for Green Bay, Wis.:
Tuesday: Areas of smoke, patchy fog before 8 a.m., mostly sunny, high near 84°F
Wednesday: Sunny and warm, high near 86°F
Thursday: Slight chance of PM thunderstorms, high near 87°F
Friday: Hot and sunny, high near 91°F
Saturday: Afternoon storm chances return, high near 88°F
More advisories may follow if wildfire smoke persists through midweek.
