The hazy skies in the Chicago area are the visible sign of the poor air quality Thursday as smoke from Canadian wildfires ...

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

Wildfire smoke from Canada turned Chicago into one of the world’s most polluted metro areas as the Lollapalooza music ...

Chicago air quality remains in the top five worst in the world Friday with an Air Quality Alert in place from Canadian ...

The National Weather Service has opted to extend an air quality alert in the Chicago area for another day.

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

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

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

Hazy skies from wildfire smoke will linger through the weekend in Chicago, with mild temperatures and an air pollution alert in place.