US Climate and Health Alliance

Fact Sheet Extreme Heat

Abstract

Heat kills by pushing the human body beyond its limits. In extreme heat and high humidity, evaporation is slowed and the body must work extra hard to maintain a normal temperature. Most heat disorders occur because the victim has been overexposed to heat or has over-exercised for his or her age and physical condition. Older adults, young children, and those who are sick or overweight are more likely to succumb to extreme heat. Conditions that can induce heat-related illnesses include stagnant atmospheric conditions and poor air quality. Consequently, people living in urban areas may be at greater risk from the effects of a prolonged heat wave than those living in rural areas. Also, asphalt and concrete store heat longer and gradually release heat at night, which can produce higher nighttime temperatures known as the “urban heat island effect.”

Resource Type
Factsheet/pamphlet
Author
Federal Emergency Management Agency (FEMA)
Resource URL
http://www.fema.gov/media-library-data/20130726-1622-20490-2694/extremeheatfactsheet_final.pdf
Date
2007
Institution
FEMA
Organization Type
Us fed gov
Health and Human Impact
Heat illness/extreme temperature

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