Main things affecting your body's ability to cool itself during extremely hot weather:
- High humidity. When the humidity is high, sweat won't evaporate as quickly, which keeps your body from releasing heat as fast as it may need to.
- Personal factors. Age, obesity, fever, dehydration, heart disease, mental illness, poor circulation, sunburn, and prescription drug and alcohol use can play a role in whether a person can cool off enough in very hot weather.
People at greatest risk for heat-related illness can take the following protective actions to prevent illness or death:
- People who are at highest risk are the elderly, the very young, and people with chronic diseases or mental illness.
- Even young and healthy people can get sick from the heat if they participate in strenuous physical activities during hot weather.
- Air-conditioning is the number one protective factor against heat-related illness and death. If a home is not air-conditioned, people can reduce their risk for heat-related illness by spending time in public facilities that are air-conditioned.
- Stay in an air-conditioned indoor location as much as possible.
- Drink plenty of fluids even if you don't feel thirsty.
- Schedule outdoor activities carefully.
- Wear loose, lightweight, light-colored clothing and sunscreen.
- Pace yourself.
- Take cool showers or baths to cool down.
- Check on a friend or neighbor and have someone do the same for you.
- Do not leave children or pets in cars.
- Check the local news for health and safety updates.