Wildfire smoke from Canada creates hazy conditions and poor air quality in Green Bay May 30, 2025. PC: Fox 11 Online
(WTAQ-WLUK) — Canadian wildfire smoke has triggered an air quality advisory issued for the entire state of Wisconsin until Thursday.
Canadian wildfire smoke will impact Wisconsin’s surface air quality over the coming days, causing the PM2.5 Air Quality Index (AQI) to range from the Unhealthy for Sensitive Groups (USG; Orange) category to the Unhealthy (Red) category. It will be possible for NowCast AQI values to reach the Very Unhealthy (Purple) category.
Smoke impacts are already being observed in northern Wisconsin on Tuesday morning, and the smoke is expected to slowly travel south through northern Wisconsin Tuesday. Overnight Tuesday into Wednesday morning, the smoke will continue south, impacting most of the state by noon Wednesday. The smoke is then expected to linger over the state from noon Wednesday until noon Thursday. We may see brief improvements in air quality on Thursday before smoke moves back into northern areas on Friday.
Sensitive groups should consider rescheduling or moving all activities inside. As for everyone else, keep outdoor activities shorter and less intense. Go inside if you have symptoms.
People with asthma should follow your asthma action plan and keep quick-relief medicine handy.
Anyone with heart disease should be aware that symptoms such as palpitations, shortness of breath or unusual fatigue may indicate a serious problem. If you have any of these symptoms, contact your health care provider.
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