Updated at 8:49 a.m. Tuesday
The National Weather Service has brought the expected snow totals down to 4-8 inches Tuesday.
The National Weather Service's winter storm warning now begins at 9 a.m.
Keep track of traffic live with our Mapquest map.
11:23 p.m. Monday
Kingswood Academy has declared a snow day.
The school announced on its Facebook page that it will be closed Tuesday.
"NO SCHOOL TOMORROW, TUESDAY," a post on the page reads. "Stay home, be safe and warm."
Know of any other closings? Tell us in the comments.
The National Weather Service has updated its winter storm advisorypredicting 7-10 inches of snow is possible.
Heavy snow is expected to begin late Tuesday morning and fall through early evening.
"Travel through O'Hare and Midway airports will likely be significantly affected by this storm," the advisory reads.
Monday's original story:
The National Weather Service has issued a winter storm warning for Chicagoland counties from 3 a.m. to midnight Tuesday and is predicting as much as 9 inches of snow could fall in some areas.
"Light snow is expected to spread across northeast Illinois tonight and become more intense toward daybreak Tuesday and persist through Tuesday evening," the warning for five counties including DuPage reads.
Six to 9 inches of snow are possible Tuesday, and wind gusts will reach 25 to 30 mph.
Heavy snowfall is most likely late Tuesday afternoon, in time for rush-hour traffic.
The National Weather Service forecasts the high temperature Tuesday will reach 32 degrees, and the night-time low will dip to 26.
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