Excessive heat warnings are issued to warn people to be careful out in the heat. The experts say these conditions can lead to medical emergencies like exhaustion or heat-stroke if you're not careful.

“It’s basically like any time you see extremes of weather,” said Dr. Keith Grams, director of emergency medicine for Rochester Regional Health. “We need to be paying attention, doing a little more planning ahead, so we don’t experience exposures for extended periods of time that our bodies aren’t ready to handle.”

If people need to be outside, he encourages them to have access to plenty of water, sunblock and shade, but the best idea is to stay in the A/C.

He said to pay attention to your own body, and take frequent breaks during physical activity.

Grams also said to keep an eye on the young and the elderly, who could have increased chances for heat stroke.