Wildfires expose millions in Midwest and Northeast to smoke

More than 100 wildfires are burning in Canada, with winds carrying the smoke southeast.

Heavy smoke from several large wildfires blazing in Canada and Minnesota is expected to engulf large swaths of the Midwest and the northeastern United States this week, exposing millions of people to dangerous air pollution.

Subscribe to read this story ad-free

Get unlimited access to ad-free articles and exclusive content.

More than 100 wildfires are burning in Canada and winds are carrying the smoke southeast. Warnings about dangerous, unhealthy air extended Wednesday from Minnesota through Toronto and into New York. Unusually hot summer temperatures were expected too.