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

According to the Chicago Office of Emergency Management, the alert has been extended through Saturday night. Highs today will ...

Chicago air quality remains in the top five worst in the world Friday with an Air Quality Alert in place from Canadian ...

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

The hazy skies in the Chicago area are the visible sign of the poor air quality Thursday as smoke from Canadian wildfires ...

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

An air quality alert covering the entire state of Minnesota continues on Thursday, marring otherwise fairly ideal weather ...

Every air quality monitor in Minnesota is reporting red or unhealthy conditions for everyone, an official said.

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

The air quality index (AQI) is predicted to be above 100 in much of New York state on Saturday, and could reach 135. Alerts ...