• 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 who are at highest risk are the elderly, the very young, and people with mental illness and chronic diseases
• But 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 factoragainst 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.

Here's what you can do to prevent heat-related illnesses, injuries, and deaths during hot weather:

• Stay in an air-conditioned indoor location
• Drink plenty of fluids.
• Wear loose, lightweight, light-colored clothing and sunscreen.
• Schedule outdoor activities carefully.
• 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 in cars.
• Check the local news for health and safety updates.