Illinoisans bundle up against frigid temperatures - Article Photos 1/6

Commuters bundle up against extreme cold conditions Tuesday, Jan. 22, 2013, in Chicago. Temperatures in the area were hovering around zero with sub-zero wind chill reading hitting 10 below. Forecasters say waves of frigid Arctic air began moving over the region Saturday night Jan. 19, 2013. (AP Photo/M. Spencer Green)