• Friday

    May 8

    67°Lo 39°

    Periods of rain

    Watch for hair frizz
    • Wind
      Gust
      30 mph
    • Precip
      78%
    • Hours of Precip
      15
    more
  • Saturday

    May 9

    65°Lo 35°

    Considerable cloudiness

    Unlikely for hair frizz
    • Wind
      Gust
      33 mph
    • Precip
      5%
    • Hours of Precip
      0
    more
  • Sunday

    May 10

    62°Lo 39°

    A thunderstorm possible

    Unlikely for hair frizz
    • Wind
      Gust
      17 mph
    • Precip
      30%
    • Hours of Precip
      0
    more
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The History Behind the UV Index

Nov 12, 2012; 5:00 AM ET The UV index has been around since the early 1990s. It was created to help you plan outdoor activities in hopes to limit overexposure to the sun. Jeannette Calle has more.