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 ...

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 ...

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 ...

The CDC has issued a Level 2 travel alert due to an outbreak of chikungunya in China, advising travelers to take enhanced ...