Heat can be dangerous and even deadly, so experts remind people to stay hydrated to avoid heat-related illnesses.
Today, heat indices, meaning the heat coupled with humidity, were above 100 degrees.
Despite the hot weather, many people spent the day in the outdoors throughout the city, including at LaFortune Park.
The director of tennis operations, Melissa McCorkle, said her students take regular breaks during their two-hour session.
She also instructs them to drink water before coming to practice, during and after.
If you're looking to cool off this summer, there are several cooling stations open throughout Tulsa.
Experts advice you to reduce your outdoor exposure on hot days. The sun is the strongest between 10am and 4pm.