• Friday

    May 8

    69°Lo 42°

    Low clouds and breezy

    Advisory for hair frizz
    • Wind
      Gust
      25 mph
    • Precip
      25%
    • Hours of Precip
      0
    more
  • Saturday

    May 9

    72°Lo 46°

    Partly sunny

    Watch for hair frizz
    • Wind
      Gust
      20 mph
    • Precip
      9%
    • Hours of Precip
      0
    more
  • Sunday

    May 10

    69°Lo 46°

    Rain, a thunderstorm

    Watch for hair frizz
    • Wind
      Gust
      33 mph
    • Precip
      76%
    • Hours of Precip
      9
    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.