According to the National Weather Service, the air quality alert remains in effect through midnight in parts of the Chicago ...

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

Chicago will see near-90 temperatures, high humidity, and poor air quality today, with storm chances returning tonight.

The National Weather Service has opted to extend an air quality alert in the Chicago area for another day.

Chicago faces an air quality alert due to Canadian wildfire smoke and high ozone levels, with risks for sensitive groups.

Wildfire smoke brings hazy skies and poor air quality to Chicago today, with hot and humid weather building into the weekend.

An air quality alert for the Chicago area was extended for a second time as smoke from Canadian wildfires lingers overhead Saturday. The National Weather Service extended an air quality alert for ...

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

An Air Quality Alert is active until Thursday night at midnight. People with sensitivities should take precautions.

An Air Quality Alert remains in effect until midnight tonight for McHenry, Lake (IL), Kane, DuPage, Cook, Kendall, Grundy, ...

The alert was also issued because of unhealthy ozone levels in addition to the smoke particles. The Chicago area has been ...