Hazy skies from wildfire smoke from Canada, which may become more concentrated with visibility potentially dropping to 3-5 ...

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

The Chicago area has experienced several days of pleasant temperatures, but the mercury will be trending upward again in ...

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

National Weather Service officials issued an air quality alert set to expire at midnight Saturday for the Chicago and ...

Most of the Chicago area remains under an Air Quality Alert this weekend due to smoke from Canadian wildfires.

Chicago experiences poor air quality for a fourth day, with temperatures around 80 degrees and minimal rain chances.

National Weather Service officials called an air quality alert in effect until midnight as well as a beach hazard warning.

The hazy skies in the Chicago area are the visible sign of the poor air quality Thursday as smoke from Canadian wildfires ...

Wildfire smoke has pushed Chicago's air quality into the "unhealthy" zone. It's so bad, in fact, that we're the most polluted ...

"The air quality is officially dangerous in Chicago," says Brian Urbaszewski, director of environmental health programs at ...

Chicago's Air Quality Alert continues due to Canadian wildfire smoke, with health advisories for sensitive groups amidst ...