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

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

Air quality has taken a serious hit across the United States as a two-fold blow of wildfires in the West and in Canada have ...

The public is advised to take precautions, especially those sensitive to polluted conditions, by limiting their time outside ...

Wildfire smoke from Canada is a problem again in the Chicago area, with an air quality alert in place now extended through ...

Why is the air quality bad right now? Smoke from wildfires spreads to the Midwest, Northeast and southern California in the U ...

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 from Wisconsin to Maine.

Air quality alerts are in place for portions of 10 states from Minnesota to Delaware as officials warn the smoke may become dangerous for sensitive groups.

Chicago had the distinction last week of having the worst air quality in the world due to Canadian wildfires. The big ...

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

The remaining 10 states affected by medium to heavy smoke from the wildfires are Colorado, New York, New Jersey, Connecticut, Pennsylvania, Vermont, Massachusetts, Indiana, New Hampshire, and ...