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

CHICAGO - Today we have an air quality alert in effect with unhealthy levels of smoke in the air. We also have high waves ...

The air quality alert is in place through Friday night. Highs today will be in the upper 70s. It is gusty with wind to around ...

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.

On Friday, the Minnesota Pollution Control Agency extended the current air quality alert for all of Minnesota and Wisconsin ...

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

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

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

Friday morning, Chicago's air quality showed a PM 2.5 of 157. Typically, anything above 100 is considered to be hazardous to at least some groups, and anything over 150 is considered to be “unhealthy, ...

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