Weather at Chicago/Ohare, IL - via NOAA's National Weather Service Mostly Cloudy with Haze and 58 F at Chicago/Ohare, IL Winds are Calm. The pressure is 1001.9 mb and the humidity is 84%. Last Updated on Mar 10 2010, 1:51 pm CST. Flight Status: Chicago OHare International Airport (ORD) Weather at Chicago Midway Airport, IL - via NOAA's National Weather Service Mostly Cloudy and 62 F at Chicago Midway Airport, IL Winds are from the South at 16.1 gusting to 23.0 MPH (14 gusting to 20 KT). The pressure is 1001.7 mb and the humidity is 60%. The wind chill is 60. Last Updated on Mar 10 2010, 1:51 pm CST. Flight Status: Chicago Midway Airport (MDW)