Avoid outside activities if possible. When outside, make sure you wear appropriate clothing, a hat, and gloves.

WIND CHILL WARNING REMAINS IN EFFECT UNTIL NOON CST TUESDAY... * WHAT...Dangerously cold wind chills. Wind chills as low as 35 to 45 below zero. * WHERE...Portions of north central and northwest Illinois and east central, northeast and southeast Iowa. * WHEN...Until noon CST Tuesday. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 10 minutes.