Wildfire Smoke Forecast to Impact Air Quality Across U.S. Midwest and Northeast

Smoke plumes from wildfires in northern Minnesota and western Ontario, Canada, are anticipated to cause unhealthy air quality conditions across a vast region of the U.S. This atmospheric event is expected to affect approximately 100 million people in the Midwest, Northeast, and Mid-Atlantic from Wednesday through Friday. Health officials advise residents, particularly those with pre-existing heart or respiratory issues, to limit strenuous outdoor activities and keep windows closed.