Air quality alerts issued Thursday in Illinois because of Canadian wildfire smoke marked the latest bout in an increasingly ...

National Weather Service officials issued an air quality alert set to expire at midnight Saturday for the Chicago and ...

Good afternoon, Chicago. Air quality alerts issued today in Illinois because of Canadian wildfire smoke marked the latest ...

An Illinois Air Pollution Action Day is declared when weather conditions are such that widespread ozone and or particulate ...

The "unhealthy" air, which ranks as level four of six on the Air Quality Index, comes after multiple consecutive days of air quality alerts.

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

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

The alert, which goes into effect at midnight. comes as the Chicago area continues to see poor air quality due to the Canadian wildfires.

An air quality alert for the Chicago area was extended for a second time as smoke from Canadian wildfires lingers overhead ...

Smoke from Canadian wildfires has returned to Central Illinois bringing significant reductions in air quality to Central ...

The Illinois Environmental Protection Agency issued a Red Forecast Air Pollution Action Day for Thursday, July 31, for the ...

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