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

Millions of Americans have been urged to avoid driving amid concerns over high air pollution levels. Air quality alerts were ...

Air quality alerts continue for millions as wildfire smoke crosses the border from Canada. Plus, the intense heat fueling ...

Thursday begins with a good deal of sunshine, but as temperatures heat up, clouds will build towards lunchtime and into the ...

CHICAGO (WLS) -- An air quality alert has been extended for part of the Chicago area through Thursday. The alert for McHenry, Lake, Kane, DuPage, Kendall, Grundy, Cook and Will counties in Illinois ...

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

Smoke from ongoing wildfires across Canada continued to drift into parts of the United States on Wednesday, causing hazy skies and triggering air quality alerts in multiple states across the upper ...

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

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

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.

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 ...

As Canadian wildfire smoke lingers in the skies, the Chicago area will soon be under an air quality alert, but the smoke ...