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

Chicago was listed as the worst air quality in the world for part of Aug. 1 because of smoke from the fires blowing southeast ...

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

CHICAGO (WLS) -- Most of the Chicago area remains under an Air Quality Alert on Saturday due to smoke from Canadian wildfires ...

CHICAGO (WLS) -- Air Quality Alerts remain in effect for the Chicago area Friday due to smoke from Canadian wildfires.

It appeared that, as of Friday, Chicago-area residents wouldn't get a reprieve from poor air quality in the near future.

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 ...

If the air quality is poor, try to avoid strenuous activities like running or exercising. And if you're at Lollapalooza, ...

Chicago faces health concerns due to smoke from Canadian wildfires, leading to an "unhealthy" air quality alert.

Illinois, Michigan, Wisconsin and Minnesota are under air quality alerts for unhealthy conditions as Canadian wildfire smoke ...

National Weather Service officials called an air quality alert in effect until midnight as well as a beach hazard warning.