• Friday

    May 2

    49°Lo 34°

    Colder with periods of sun

    Unlikely for hair frizz
    • Wind
      Gust
      21 mph
    • Precip
      2%
    • Hours of Precip
      0
    more
  • Saturday

    May 3

    50°Lo 38°

    Sun followed by clouds

    Unlikely for hair frizz
    • Wind
      Gust
      10 mph
    • Precip
      2%
    • Hours of Precip
      3.5
    more
  • Sunday

    May 4

    49°Lo 41°

    Occasional rain

    Watch for hair frizz
    • Wind
      Gust
      10 mph
    • Precip
      66%
    • Hours of Precip
      4.5
    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.