Chicago/O'Hare had a high temperature of 98° yesterday (August 23rd), which broke the record high temperature for the date of 97°, which was set in 1947.
Chicago/O'Hare had a low temperature of 77° on yesterday (August 23rd), which broke the record high minimum temperature for the date of 76°, which was set in 1968.
Chicago/O'Hare had a high temperature of 100° today (August 24th), which tied the record high temperature for the date of 100°, which was set in 1947.