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

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

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

Good afternoon, Chicago. Air quality alerts issued today in Illinois because of Canadian wildfire smoke marked the latest bout in an increasingly common summer occurrence. The alert covers 34 Illinois ...

Concern for poor air quality in the greater Chicago area remains as the Illinois EPA extends its alert until Thursday night.

An air quality alert in the Chicago area has been extended for another day as Canadian wildfire smoke continues to plague the ...

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

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

St. Louis and the entire state of Illinois will be under an air quality alert Friday due to wildfire smoke from Canada ...

While an air quality alert continues for parts of the Midwest due to smoke from Canadian wildfires, northeastern Illinois was ...

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

Chicago officially had the worst air quality in the world for a few hours Thursday. As a haze of Canadian wildfire smoke blanketed the metro area, no other major city in the world had air pollution ...