City of St Louis Department of Health

Stay in the coolest environment available. Use air conditioner if it is available. When using a fan, keep windows open on the shady side and use the fan to ventilate living quarters. Spend time in air conditioned public places if no air conditioning is available and temperatures are above 95 degrees Fahrenheit.
Drink plenty of cool water and other non-alcoholic and non-caffeine liquids.
Eat light, easily digested food, avoiding hot, heavy meals. Limit cooking to keep indoor temperatures down.
Check daily on friends, relatives and neighbors at risk for heat illnesses. Those at highest risk are the elderly and people with chronic illnesses.
Dress in loose fitting, lightweight and light colored natural fiber clothing. Wear a hat to protect your head from the sun.
Limit activity in the middle of the day when temperatures are highest. Adjust working hours for those working outdoors or in non-air conditioned buildings whenever possible, and provide frequent breaks with plenty of fluids.
Bathe or shower frequently in cool water.
Do not increase salt or potassium intake without consulting your doctor. Check all medications with your doctor or pharmacist for increased risk of heat related illness.
If you feel ill, call your doctor or 911.