As Canada grapples with one of its worst wildfire seasons on record, smoke from the blazes have prompted air quality alerts ...

As of Aug. 6, there are about 750 active Canadian wildfires, with at least 190 labeled “out of control,” according to the ...

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

Temperatures continue to creep up in Chicagoland this week, with Wednesday highs in the mid- to upper 80s. Meanwhile, smoke ...

As the city's surface warms, it heats the air above it, causing that air to rise. This rising motion can pull in smoke-laden air from the north, bringing it down to the surface.

Air quality alerts have been issued across 12 states for Wednesday, according to the National Weather Service.

Smoke from Canadian wildfires drifted into the region last week. Doctors said they've seen an influx in appointments for respiratory problems as a result.

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

CHICAGO (WLS) -- An air quality alert was issued for the greater Chicago area on Tuesday. The alert was issued by the EPA at about 11:56 a.m. It will be in effect until midnight. Lake, Porter, Newton ...

Smoke from hundreds of wildfires in Canada is lingering over the northern U.S., spreading across to roughly a dozen states ...

WGN-TV Chief Meteorologist Demetrius Ivory joins Lisa Dent to discuss how Canadian wildfires continue to affect Chicago’s ...

The air quality index (AQI) dropped below 100 overnight, meaning the air quality is now “unhealthy for some” across a good portion of northern Illinois. Those with heart and lung ...