WEDNESDAY NIGHT: Clear, cool, comfortable. Local upper 40s/near 50 normally cooler outlying areas. Low: 55 

Full forecast details and more at the WGN Weather Center blog

THURSDAY: Uninterrupted sunshine, continued hazy due to wildfire smoke.  A bit cool for the season but eminently comfortable. Northeast lake breezes continue to keep areas near Lake Michigan lower where low to mid 60s are expected.  Winds: Northeast 7-18 mph.  High: 73.Thursday night: Clear, cool and hazy. Some upper 40s normally cooler inland locations. Low: 54