The wave of extreme heat washing over Illinois has given Chicago something it hasn't seen since 2005: a 100-degree day.
National Weather Service meteorologist Stephen Rodriguez says the temperature in the city officially hit 100 degrees Thursday afternoon. That official reading is taken at O'Hare International Airport.
Rodriguez said the temperature also hit 100 degrees in downtown Chicago. And at Midway Airport, the high was 101.
Chicago braced for the heat by setting up cooling centers around the city. Many summer school classes were cancelled and Commonwealth Edison kept extra crews at work to deal with power outages.
The utility reported mostly small scattered outages by mid-afternoon. And Chicago police were reporting no serious heat-related problems.
Temperatures are expected to drop back into the 80s and 90s Friday.