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Yes, it was warm Friday, but it wasn't record-breaking.
The National Weather Service the Chicago's official high temperature Friday -- recorded at O'Hare International Aiport -- was 92 degrees.
That wasn't enough to break a 58-year-old record. The record for Sept. 2 remains at 101 degrees.
A "hot, humid and unstable air mass" was to blame for the heat across northern Illinois and northwest Indiana, the weather service said.