So St. Louis makes another seasonal jump from monsoon season to death valley days. Since the hot weather popped up so fast you might want to keep track of children, elderly relatives and neighbors who may be vulnerable to heat exhaustion.

Here’s what the Mayo Clinic says. At the end of the Mayo list, find a list of other information about dealing with heat and preparing for it.:
Heat exhaustion is one of the heat-related syndromes, which range in severity from mild heat cramps to heat exhaustion to potentially life-threatening heatstroke.
Signs and symptoms of heat exhaustion often begin suddenly, sometimes after excessive exercise, heavy perspiration and inadequate fluid intake. Signs and symptoms resemble those of shock and may include:
Feeling faint or dizzy
Nausea
Heavy sweating
Rapid, weak heartbeat
Low blood pressure
Cool, moist, pale skin
Low-grade fever
Heat cramps
Headache
Fatigue
Dark-colored urine

If you suspect heat exhaustion:
Get the person out of the sun and into a shady or air-conditioned location.
Lay the person down and elevate the legs and feet slightly.
Loosen or remove the person’s clothing.
Have the person drink cool water.
Cool the person by spraying or sponging him or her with cool water and fanning.
Monitor the person carefully. Heat exhaustion can quickly become heatstroke.
If fever greater than 102 F (38.9 C), fainting, confusion or seizures occur, dial 911 or call for emergency medical assistance.

Read more about heat illnesses:
– The Red Cross guide to dealing with heat.
– Heat illnesses in children.
– The CDC on heat illnesses.
– The CDC on heat and the elderly.