The city is racing to put up 277 sensors. Once installed, Chicago will have the biggest number of high-quality air monitors ...

Chicago Tribune photographers capture a summer storm that swept the area ending in a rainbow over Lake Michigan.

More than 3 million people were told to remain on alert for flash floods as torrential rainfall moved through.

A frontal boundary slowly pushing through the northern tier of the country will be the focus of severe thunderstorms over the next couple of days, with thunderstorms capable of producing tornadoes, ...

The Midwest, especially Chicago, has been getting hit with waves of smoky air, carried in by shifting winds. Some Chicagoans ...

Australia's Great Barrier Reef has suffered the largest decline in coral cover in two of its three regions over the last year ...

Strong rain storms lashed the East Coast Thursday, flooding a New York City highway and other roads and prompting a Long Island, New York, official to plead with people to say ...

Michael Busch homered on the game’s first pitch, Moisés Ballesteros hit a bases-clearing double and the Chicago Cubs trounced the Milwaukee Brewers 10-3 on Wednesday to avoid a three-game sweep.

Storms and possible flooding today will give way to cooler, drier air and sunshine heading into a beautiful weekend.

The Chicago Cubs recalled Ballesteros from Triple-A Iowa ahead of Wednesday's series finale against the Milwaukee Brewers. He took the spot of Vidal Brujan, who was designated for assignment.

Update as of 7:45 p.m.: Storms are nearing the Sioux Empire area, and as of now, no tornado watch or warning is in effect with this system, NWS radars show. There are multiple severe thunderstorm ...

Watch A Watch indicates the possibility of severe weather in a relatively broad area. For instance, a tornado watch means conditions are favorable for the development of tornadoes.