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

We’re more than two-thirds of the way through Chicago’s meteorological summer, and so far when the weather hasn’t been suffocatingly hot and humid, it’s featured air that’s dangerous for too many of ...