Listen Live Graphics (Indy)

INDIANAPOLIS — How hot does it get in your car on a 100-plus degree day? You probably don’t want to know.

With Indianapolis set for a high of 104 degrees on Friday, radio station RadioNOW 100.9 subjected producer Kal to a hot car, calling attention to a serious problem — people who leave children or pets in vehicles.

Kal closed himself in a car with the windows up about 6:45 a.m., with the temperature already more than 80 degrees at the Radio One parking lot downtown.

Equipped with a thermometer and flanked by an EMT, Kal sat as the sun rose and temperatures climbed.

“What people don’t realize is just how hot it is inside vehicles,” said Kyle Smelser, co-host of RadioNOW Mornings. “We’re making Kal … be our dog today.”

Sweat quickly began rolling as the minutes passed, and Kal said he just couldn’t take any more once the temperature inside got to 103 just a couple of hours later.

Indianapolis’ official temperature had risen to 90 degrees by 9 a.m.

“He’s doing a lot better than I thought because he only weighs 135 pounds, and I thought the heat would get to him quicker, but he’s doing well. He’s usually a big baby most of the time,” Smelser said.

Though RadioNOW had some fun with the heat, high temperatures in vehicles can quickly become deadly for animals and for people.

“Think of (your pet) as a child, because they are also a living creature,” said Rachel Bogle, co-host of RadioNOW Mornings. “They’re pretty defenseless.”

If left completely closed on a 100-plus degree day, the temperature inside a vehicle left in the sun can easily exceed 135 degrees.