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      Extreme Heat Warning
      until 8:00 PM CDT
      Elev 541 ft, 38.610 °N 90.230 °W

      St. Louis, MO

      Compton Heights Station100°
      Updated: 1:19 PM CDT on September 4, 2026 (GMT -5)
      2 minutes ago
      101°
      79°
      100
      Feels Like 112
      Fair
      N
      6
      Same temperature is expected today
      50
      50
      575
      90
      50
      7
      0 mph
      50
      50
      50
      50
      50
      50
      Radar · Now
        Hyper-local data from Weather Underground's network of
        400,000+ personal weather stations worldwide
        Today
        Sat 09/05
        High 101°f
         18% Precip. / 0 in
        Sunshine and clouds mixed. Very hot. High 101F. Winds light and variable.
        Tonight
        Sat 09/05
        Low 78°f
         5% Precip. / 0 in
        Mainly clear skies. Low 78F. Winds light and variable.
        Tomorrow
        Sun 09/06
        High 100°f73°f
         14% Precip. / 0 in
        Generally sunny despite a few afternoon clouds. Very hot. High near 100F. Winds NW at 5 to 10 mph.
        Hourly Forecast
        Now
        100°
        2PM
        100°
        3PM
        101°
        4PM
        100°
        5PM
        98°
        6PM
        97°
        7PM
        95°
        7:25PM
        Sunset
        8PM
        91°
        9PM
        88°
        10PM
        85°
        11PM
        84°
        12AM
        83°
        1AM
        82°
        2AM
        81°
        3AM
        80°
        4AM
        79°
        5AM
        79°
        6AM
        79°
        6:33AM
        Sunrise
        7AM
        79°
        8AM
        83°
        9AM
        87°
        10AM
        91°
        11AM
        94°
        12PM
        96°
        1PM
        97°
        Precipitation
        18%
        Pollen
        Ragweed Pollen
        High
        Air Quality
        55
        Moderate
        UV Index
        8
        Very High
        Additional Conditions
        1. Pressure 29.92 in
        2. Visibility 10 miles
        3. Clouds Partly Cloudy
        4. Dew Point69°F
        5. Humidity 37%
        6. Rainfall 0 in
        7. Snow Depth 0 in
         KCPS Station History
        Almanac for September 4, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 101°F 84°F 101°F 2011
        4. Low 79°F 63°F 43°F 1974
        5. Rain/Snow Depth
        6. Precipitation 0 in 3.6 in -
        7. Snow 0 in 0 in -
        Almanac for September 5, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 100°F 84°F 100°F
        4. Low 79°F 63°F 41°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 6:32 AM 7:26 PM
        3. Civil Twilight 6:05 AM 7:53 PM
        4. Nautical Twilight 5:33 AM 8:25PM
        5. Astronomical Twilight 5:00 AM 8:58 PM
        1. Length of Visible Light 13h 47m
        2. Length of Day 12h 53m
        3. Tomorrow will be 2 minutes 26 seconds shorter
        1. Moon 11:57 PM 2:54 PM
        2. Last Quarter40% of the Moon is Illuminated
        Sep 4
        Waning Half Last Qtr
        Sep 10
        New Moon
        Sep 18
        Waxing Half First Qtr
        Sep 26
        Full Moon
        Precipitation
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