Surface observations

Data from the National Weather Service, made available here by the UAlbany Department of Atmospheric and Environmental Sciences


The weather observed at CHICAGO O'HARE, IL (KORD) at 11:51 AM CST was:
  The skies were cloudy.
  Temperature: 28F ( -2C)  Dewpoint:  19F ( -7C)  Relative Humidity:  69%
  Winds from the N  (010 degs) at  9 mph.
  Pressure: 1020.7 millibars.  Altimeter:30.11 inches of mercury.
  The prevailing visibility was 10 miles.
  The maximum temperature in the past 6 hours was  28F.
  The minimum temperature in the past 6 hours was  13F.

The weather observed at CHICAGO O'HARE, IL (KORD) at 12:47 PM CST was:
  The skies were cloudy.
  Temperature: 28F ( -2C)  Dewpoint:  19F ( -7C)  Relative Humidity:  69%
  Winds from the N  (010 degs) at  9 mph.
  Altimeter:30.08 inches of mercury.
  The prevailing visibility was 10 miles.