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

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

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

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

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

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

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

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

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

Air quality alerts were in effect in Iowa, Minnesota, Wisconsin and Michigan, as well as eastern Nebraska and parts of ...

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

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