Chicago keeps breaking records as a heat wave moves across the region.
The National Weather Service said the temperature his 103 at O'Hare International Airport on Friday, breaking the record of 99 degrees set in 1988. That's the third-straight day with a triple-digit reading in Chicago. That's only happened twice before, in July 1911 and August 1947.
City officials are urging Chicago residents to check on their neighbors and families, the elderly and the disabled. Chicagoans can call 3-1-1 to find nearby cooling centers.
The city's emergency management agency says from June 28 through the Fourth of July, the total number of heat-related calls to 9-1-1 was 307.
The Chicago Fire Department transported 310 patients for heat-related problems during the same period.