Air quality alerts have been issued across most of the Midwest, and hundreds of wildfires are burning across Canada.

Smoke from the more than 700 wildfires burning in Canada is continuing to blanket parts of the Midwest for a final day.

"The air quality is officially dangerous in Chicago," says Brian Urbaszewski, director of environmental health programs at ...

Wildfire smoke covered the Chicago area Thursday, leading to unhealthy air quality and a wave of haze, but where did it come ...

When wildfires burn, the smoke can travel long distances and degrade air quality far away, which presents risks for those ...

A stretch of hot, dry weather is expected to build through the end of the week. CHICAGO - Not only has wildfire smoke been a respiratory irritant for the past several days, it has also held ...

Chicago will see cooler, clearer weather through the weekend, with mild temperatures and some lingering wildfire smoke.