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

Chicago is under an Air Quality Alert today because of wildfire smoke. The air quality is considered "unhealthy," especially for children, seniors, and people with heart or lung conditions. CHICAGO - ...

Smoke from Canadian wildfires is once again impacting air quality in the Chicago area, with air quality index readings Thursday morning in the “unhealthy” category for some suburbs, according to ...

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

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

While an air quality alert continues for parts of the Midwest due to smoke from Canadian wildfires, northeastern Illinois was ...

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

Smoke from Canadian wildfires continues to affect air quality across the Midwest, though Monday’s conditions were an improvement for most of the Chicago area.

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

The National Weather Service issued an air quality alert for the city on Thursday and kept extending it through Sunday night. There was no alert Monday.

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

Parts of Illinois and Indiana are also under air quality alerts. People in New York, Vermont, New Hampshire, and Maine are also being advised to limit outdoor activity due to pollution from the smoke.