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

Most of the Chicago area remains under an Air Quality Alert this weekend due to smoke from Canadian wildfires.

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

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

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

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 ...

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

Smoke has continued to cloud Illinois' air for a second straight day, but the poor air quality isn't because of a fire in the ...