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

The poor air quality continues to prevail in Illinois as Canadian wildfire smoke migrates south into the U.S. As a result, ...

Wildfire smoke covered the Chicago area Thursday, leading to unhealthy air quality and a wave of haze, but where did it come ...

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

Smoke from Canadian wildfires continues to affect air quality across the Midwest, though Monday’s conditions were an ...

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

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.

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

Millions of Americans have been urged to avoid driving amid concerns over high air pollution levels. Air quality alerts were issued across parts of Illinois, Colorado, Wyoming, and Arizona on Thursday ...

Due to smoke from wildfires, several U.S. cities had an AQI over 100 on Aug. 5, which means the air is unhealthy for ...

I’ll tell ya, it’s about time we see some green pop up on our air quality map! That means the Air Quality Index (AQI) has ...