CHICAGO – ComEd says the teams have restored power to more than 42,000 customers and are working to restore another 9,400 when sub-zero sub-zero temperatures hit Illinois.
The cold also affected transport in Chicago on Wednesday morning, with more than 1,600 flights canceled and a limited train service.
The National Weather Service says the actual temperature was 23 below zero at O'Hare International Airport in Chicago. The chills caused by the wind in northern Illinois were as low as 57 in Rockford.
Authorities have warned against venturing into dangerously cold weather and the governor has issued a disaster proclamation.
South Shore Line suspended its suburban train trips on Wednesday and said it expected limited service on Thursday. Extreme weather conditions previously caused Amtrak to cancel all trains entering and leaving Chicago on Wednesday and most services to or from Chicago on Thursday.
Some of Chicago's main attractions did not open on Wednesday and schools are closed.