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 ...

While the haze slightly lifted Saturday morning, air quality levels are expected to worsen across the Chicago area over 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 ...

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 ...

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

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

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 ...

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

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