Cindy,
If you haven't got humidity on top of the heat, best is to strip down to your skivvies and a mesh baby doll. Sit in front of the largest fan you can find, and let him blow on you while you mist yourself with cool water. You do have a mister?
If you do have humidity, only thing is to strip down to your bra and panties, and drop a couple of ice cubes in each. When they melt, repeat.
Good luck!