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      Elev 810 ft, 34.025 °N 117.816 °W

      Diamond Bar, CA

      Diamond Bar Station68°
      Updated: 9:15 PM PDT on September 28, 2026 (GMT -7)
      8 minutes ago
      87°
      65°
      68
      Feels Like 68
      Clear
      N
      1
      Higher temperature is expected tomorrow
      Wundermap
      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
        Tonight
        Tue 09/29
        Low 62°f
         2% Precip. / 0 in
        Clear skies. Low 62F. Winds light and variable.
        Tomorrow
        Wed 09/30
        High 89°f
         3% Precip. / 0 in
        Sunny. High 89F. Winds WSW at 10 to 15 mph.
        Tomorrow night
        Wed 09/30
        Low 63°f
         4% Precip. / 0 in
        A mostly clear sky. Low 63F. Winds WNW at 5 to 10 mph.
        Hourly Forecast
        Now
        70°
        10PM
        69°
        11PM
        67°
        12AM
        66°
        1AM
        65°
        2AM
        65°
        3AM
        64°
        4AM
        63°
        5AM
        64°
        6AM
        63°
        6:44AM
        Sunrise
        7AM
        63°
        8AM
        66°
        9AM
        70°
        10AM
        74°
        11AM
        77°
        12PM
        81°
        1PM
        84°
        2PM
        87°
        3PM
        88°
        4PM
        87°
        5PM
        85°
        6PM
        83°
        6:38PM
        Sunset
        7PM
        79°
        8PM
        76°
        9PM
        74°
        Precipitation
        3%
        Pollen
        None
        Air Quality
        40
        Good
        UV Index
        0
        Low
        Additional Conditions
        1. Pressure 29.72 in
        2. Visibility 10 miles
        3. Clouds Partly Cloudy
        4. Dew Point55°F
        5. Humidity 59%
        6. Rainfall 0 in
        7. Snow Depth 0 in
         KPOC Station History
        Almanac for September 28, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 87°F 85°F 107°F 1963
        4. Low 65°F 58°F 40°F 1934
        5. Rain/Snow Depth
        6. Precipitation 0 in 2.9 in -
        7. Snow 0 in 0 in -
        Almanac for September 29, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 89°F 85°F 105°F
        4. Low 62°F 58°F 43°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 6:43 AM 6:39 PM
        3. Civil Twilight 6:18 AM 7:04 PM
        4. Nautical Twilight 5:49 AM 7:33PM
        5. Astronomical Twilight 5:20 AM 8:02 PM
        1. Length of Visible Light 12h 45m
        2. Length of Day 11h 55m
        3. Tomorrow will be 2 minutes 6 seconds shorter
        1. Moon 7:40 PM 8:53 AM
        2. Waning Gibbous92% of the Moon is Illuminated
        Oct 3
        Waning Half Last Qtr
        Oct 10
        New Moon
        Oct 18
        Waxing Half First Qtr
        Oct 25
        Full Moon
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