Extreme Heat FAQs
Extreme Heat often results in the highest number of annual deaths among all weather-related hazards. In most of the United States, extreme heat is defined as a long period (2 to 3 days) of high heat and humidity with temperatures above 90 degrees. In extreme heat, evaporation is slowed and the body must work extra hard to maintain a normal temperature. This can lead to death by overworking the human body.
- Extreme heat can occur quickly and without warning.
- Older adults, children, and sick or overweight individuals are at greater risk from extreme heat.
- Humidity increases the feeling of heat as measured by a heat index.
If you are under an extreme heat warning:
- What you can do
- Find air conditioning.
- Avoid strenuous activities.
- Watch for heat illness.
- Wear light clothing.
- Check on family members and neighbors.
- Drink plenty of fluids.
- Watch for heat cramps, heat exhaustion, and heat stroke.
- Never leave people or pets in a closed car.
- Salt tablets should only be taken if specified by your doctor
How to stay safe when extreme heat threatens:
- Prepare now
- Find places in your community where you can go to get cool.
- Keep your home cool by doing the following:
- Cover windows with drapes or shades.
- Weather-strip doors and windows.
- Use window reflectors, such as aluminum foil-covered cardboard, to reflect heat back outside.
- Add insulation to keep the heat out.
- Use attic fans to clear hot air.
- Install window air conditioners and insulate around them.
- Learn to recognize the signs of heat-related illness.
- Be safe during
- Never leave a child, adult, or animal alone inside a vehicle on a warm day.
- Find places with air conditioning. Libraries, shopping malls, and community centers can provide a cool place to take a break from the heat.
- If you’re outside, find shade. Wear a hat wide enough to protect your face.
- Wear loose, lightweight, light-colored clothing.