Officials are warning residents to stay in cool areas and check in with neighbors as five Oak Park residents have already been transported to the hospital due to the heat, Oak Park fire officials said Wednesday.

The fire department has had 13 calls during the heat wave, said Fire Chief Tom Ebson. Of those, five were calls for paramedics due to heat-related illnesses. All five were transported to the hospital, but none were considered life-threatening.

“They were all non-critical,” said Fire Chief Tom Ebson. “Of the five calls, they reported that they were due to some kind of heat exhaustion.”

Ebson described the ages of those who were treated as “across the board.”

The department also responded to eight service calls, mostly related to rolling power outages. For example, two were people stuck in elevators and two restaurants lost their vents and had smoke fill the kitchen. All were resolved without incident, Ebson said.

Oak Park officials are asking residents to be careful, check on neighbors and make use of local cooling centers during the severe heat wave.

The free cooling centers are at Rush Oak Park Hospital, 520 S. Maple Ave., West Suburban Medical Center, 3 Erie Court, and the township, 418 S. Oak Park Ave. Residents are also welcome to go to Village Hall, 123 Madison St., or any of the three Oak Park libraries.

The township will provide free transportation to the centers for seniors. To arrange, call 708-383-8060. Residents are also being asked to call 911 if they experience any heat stoke symptoms, which include a rapid pulse, difficulty breathing, confusion, disorientation or the absence of sweat with red or flushed skin.

Temperatures are expected to stay above 90 through the weekend with the heat index occasionally entering triple-digits, according to the Chicago Tribune Weather Center.