• Clear 78°
    Hair Frizz Current Weather
    • Relative Humidity
      68%
    • Wind
      Speed
      8 mph
    • Dew
      Point
      67°
  • Early AM

    Sep 5

    Lo 77°

    Mainly clear

    Hair Frizz Weather
    • Wind
      Gust
      6 mph
    • Precip
      6%
    • Hours of Precip
      0
    Day Details >
  • Today

    Sep 5

    Hi 94°

    Mostly sunny, hot and humid

    Advisory for hair frizz
    • Wind
      Gust
      8 mph
    • Precip
      2%
    • Hours of Precip
      0
    Day Details >
  • Tomorrow

    Sep 6

    Hi 95°

    Mostly sunny, hot and humid

    Watch for hair frizz
    • Wind
      Gust
      9 mph
    • Precip
      7%
    • Hours of Precip
      0
    Day Details >
Next

The heat wave will continue through Monday

9/5 9/6 Now: 4:09am
AM 4-8
  • 4am Mostly clear 80° 0%
  • 5am Mostly clear 78° 0%
  • 6am Mostly clear 77° 0%
  • 7am Mostly sunny 78° 0%
  • 8am Mostly sunny 79° 0%
PM 3-8
  • 3pm Partly sunny 94° 0%
  • 4pm Partly sunny 94° 0%
  • 5pm Partly sunny 93° 0%
  • 6pm Partly sunny 92° 0%
  • 7pm Mostly sunny 88° 0%
  • 8pm Mostly clear 86° 0%
PM 9-2
  • 9pm Mostly clear 84° 0%
  • 10pm Mostly clear 82° 0%
  • 11pm Clear 80° 0%
  • 12am Clear 79° 0%
  • 1am Clear 78° 0%
  • 2am Mostly clear 77° 0%
Hourly Forecast >
Sep 05, 2015; 1:33 AM ET
Five-day Weather Forecast for St. Louis, MO
St. Louis, MO Weather Forecast

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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.

Sat. Hair Frizz

Sat. Wind Maps

Sat. UV Index