PEORIA, Ill -- If you do have to be outdoors or are doing anything strenuous in the heat, the American Red Cross has some tips to avoid heat-related illness.
To stay cooler, wear light-colored and light-weight clothes.
Eat smaller meals throughout the day with low protein to keep you body temperature down.
And of course stay hydrated with plenty of water, even if you're not thirsty.
Erin Miller with the American Red Cross says strenuous activity during daylight (between 7 a.m. and 7 p.m.) commonly leads to dehydration.
"That's when you start experiencing things like profuse-sweating, feeling kind of tired and really dizzy, that's when you're at the second stage of heat-related illness, and you need to be inside in the air-conditioning drinking water," Miller says.
If you are in the sun, apply plenty of sunscreen that is SPF 15 or higher.
And one last time, water is your friend even if you're already drinking other fluids.