The city reached a record-breaking 93 degrees Thursday, topping the previous May 15 record of 91 degrees set in 1961.

A week-long severe weather threat ramps up Thursday across the Midwest, with Chicago, Milwaukee and other major cities bracing for powerful storms capable of producing hurricane-force wind gusts, ...

AirNow interactive map, as of 3 p.m. ET, air quality in Chicago had improved, though conditions in Newton County, in north Indiana, were classified as "moderate." The area surrounding nearby ...

Chicago's eastern boundary is formed by Lake Michigan, and the city is divided by the Chicago River into three geographic sections: the North Side, the South Side and the West Side. These sections ...