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      Elev 8 ft, 37.590 °N 122.078 °W

      Union City, CA

      Union City Station54°
      Updated: 6:50 AM PDT on September 14, 2026 (GMT -7)
      4 minutes ago
      78°
      53°
      54
      Feels Like 54
      Sunny
      N
      3
      Higher 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
        Tue 09/15
        High 78°f
         3% Precip. / 0 in
        Mainly sunny. High 78F. Winds NW at 10 to 20 mph.
        Tonight
        Tue 09/15
        Low 56°f
         8% Precip. / 0 in
        A few passing clouds, otherwise generally clear. Low 56F. Winds WNW at 5 to 10 mph.
        Tomorrow
        Wed 09/16
        High 73°f57°f
         8% Precip. / 0 in
        Partly cloudy skies. High 73F. Winds WNW at 10 to 20 mph.
        Hourly Forecast
        Now
        54°
        7AM
        54°
        8AM
        57°
        9AM
        61°
        10AM
        66°
        11AM
        69°
        12PM
        73°
        1PM
        76°
        2PM
        77°
        3PM
        77°
        4PM
        75°
        5PM
        73°
        6PM
        71°
        7PM
        68°
        7:17PM
        Sunset
        8PM
        65°
        9PM
        63°
        10PM
        61°
        11PM
        61°
        12AM
        60°
        1AM
        60°
        2AM
        60°
        3AM
        59°
        4AM
        59°
        5AM
        59°
        6AM
        58°
        Precipitation
        8%
        Pollen
        Ragweed Pollen
        Moderate
        Air Quality
        19
        Good
        UV Index
        0
        Low
        Additional Conditions
        1. Pressure 29.94 in
        2. Visibility 7 miles
        3. Clouds Clear
        4. Dew Point51°F
        5. Humidity 90%
        6. Rainfall 0 in
        7. Snow Depth 0 in
         KHWD Station History
        Almanac for September 14, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 78°F 78°F 103°F 1971
        4. Low 53°F 58°F 45°F 1950
        5. Rain/Snow Depth
        6. Precipitation 0 in 3.3 in -
        7. Snow 0 in 0 in -
        Almanac for September 15, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 73°F 78°F 102°F
        4. Low 53°F 58°F 45°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 6:49 AM 7:17 PM
        3. Civil Twilight 6:23 AM 7:43 PM
        4. Nautical Twilight 5:52 AM 8:14PM
        5. Astronomical Twilight 5:20 AM 8:45 PM
        1. Length of Visible Light 13h 20m
        2. Length of Day 12h 27m
        3. Tomorrow will be 2 minutes 24 seconds shorter
        1. Moon 10:39 AM 8:54 PM
        2. Waxing Crescent14% of the Moon is Illuminated
        Sep 18
        Waxing Half First Qtr
        Sep 26
        Full Moon
        Oct 3
        Waning Half Last Qtr
        Oct 10
        New Moon
        Precipitation
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