The UV index forecasts the intensity of ultraviolet (UV) light
for any given day. The index helps people know what precautions
to take to avoid sunburn or other skin damage from being in the
sun too long. The UV index is listed on the weather page of many
daily newspapers. Sun protection measures, such as wearing
sunscreen, should always be taken when the UV index is 5 or
above. The UV index is measured on a scale of 0 to 11+. Last
Revised: September 1, 2011 Author: Healthwise Staff Medical
Review: William H. Blahd, Jr., MD, FACEP - Emergency Medicine &
H. Michael O'Connor, MD - Emergency Medicine To learn more visit
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