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

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

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

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

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

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

Air quality alerts issued Thursday in Illinois because of Canadian wildfire smoke marked the latest bout in an increasingly common summer occurrence. The alert covers 34 Illinois counties designated ...

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

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

Smoke from Canadian wildfires settled over Chicago Thursday, with air quality reaching “unhealthy” levels for everyone. Air ...

While air quality was in the "unhealthy for sensitive groups" category in Chicago, it was even worse in some suburbs.

The Air Quality Alert has been extended for both Wisconsin and Illinois through Friday, lasting until Noon for southern Wisconsin and Friday night for northern Illinois. Significant impacts from ...