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.

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

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

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

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

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

Blazes across several Canadian provinces and territories pose health risks to Canadians and their southern neighbours.

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

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

Saturday offers generous sunshine mixed with puffy fair weather clouds, comfortable temperatures and low humidity. An Air ...

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