Researchers at Argonne National Laboratory in southwest suburban Lemont are taking a close look at how that Arctic weather is ...

Here’s a look back at what happened in the Chicago area on Jan. 24, according to the Tribune’s archives. Is an important ...

CHICAGO - Colder air is moving into the region this evening with temperatures expected to drop to around zero by daybreak Friday. Wind chills will likely drop to -5 to -10 with west winds around 5-10 ...