Extreme Heat

Extreme heat, defined by FEMA as a long period (at least two to three days) of high heat and humidity with temperatures above 90 degrees, can be more than uncomfortable – it can be deadly. It is often attributed as the highest annual number of deaths in the United States among all weather-related disasters and can happen anywhere across the country. While climate change brings more extreme fluctuations in weather, there are steps you can take to prepare.

During an extreme heat warning:

• Locate an air-conditioned space such as a shopping mall or public library. Stay there during the hottest period of the day, typically in the afternoon between 3-5 pm. Even a few hours spent in air conditioning can help your body stay cooler when you return to the heat.
• Drink plenty of fluids, even if you don’t feel thirsty, to prevent dehydration.
• Watch for signs of heat cramps, heat exhaustion and heat stroke. 
• Do not use an electric fan when temperatures reach 95 degrees or higher. They lend a false sense of comfort due to creating air flow but not reducing body temperature and could increase your risk of heat-related illness. Instead, take a cool shower or bath to cool your body temperature down. 
• Wear lightweight, loose-fitting clothing.
• Avoid strenuous activities and pace yourself. 

For more information on protecting your lungs in extreme weather, please contact our Lung HelpLine at 1-800-LUNGUSA.

Additional Resources

• Ready.gov has information on dealing with extreme heat.
• Centers for Disease Control and Prevention (CDC) has advice on staying cool during heatwaves.
• Environmental Protection Agency (EPA) also has preparation advice for different types of natural disasters and weather events, including extreme heat.