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BookmarkThe UV index is an international standard measurement of how strong the ultraviolet (UV) radiation from the sun is at a particular place on a particular day.
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Its purpose is to help people to effectively protect themselves from UV light, which causes sunburns, eye damage such as cataracts, skin aging, and skin cancer (see the section health effects of ultraviolet light).
Public-health organizations recommend that people protect themselves (for example, by wearing sunscreen and a hat) when the UV index is 3 or higher..
For more information about the topic UV index, read the full article at Wikipedia.org, or see the following related articles:
Sunburn — A sunburn is a radiation burn to the skin produced by overexposure to ultraviolet (UV) light, commonly from the sun's rays. A similar burn can be ... > read more
Sunscreen — Sunscreen (also known as sunblock) is a lotion, spray or other topical product that helps protect the skin from the sun's ultraviolet (UV) radiation, ... > read more
Ultraviolet — Ultraviolet (UV) radiation is electromagnetic radiation of a wavelength shorter than that of the visible region, but longer than that of soft X-rays. ... > read more
Ionizing radiation — Ionizing radiation is a type of particle radiation in which an individual particle (for example, a photon, electron, or helium nucleus) carries ... > read moreNote: This page refers to an article that is licensed under the GNU Free Documentation License. It uses material from the article UV index at Wikipedia.org. See the Wikipedia copyright page for more details.
