ultraviolet index


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ultraviolet index

a daily index issued by the U.S. National Weather Service for many cities, forecasting the amount of dangerous ultraviolet light that will arrive at the earth's surface about noon the following day.

ul·tra·vi·o·let in·dex

(ŭl'tră-vī'ŏ-lĕt in'deks)
A daily index issued by the U.S. National Weather Service for many cities, forecasting the amount of dangerous ultraviolet light that will arrive at the Earth's surface about noon the following day.
References in periodicals archive ?
The atmospheric ozone measurements produced by SBUV/2 are integrated into an ultraviolet index compiled by the National Weather Service and the Environmental Protection Agency.
Cell phone owners can also get ultraviolet index readings and general weather information from the National Weather Service via Outspoken.
The ultraviolet index should have as much impact on behaviors as a rain forecast, Dr.
The ultraviolet index levels in the Los Angeles area will be 9, a high exposure reading that means a person could be sunburned in seven to eight minutes.
The ultraviolet index level hit 10, meaning a fair-skinned person would suffer a sunburn in about four minutes if not protected.
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