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      Heat Advisory
      until 10:00 PM PDT
      Elev 7 ft, 37.561 °N 122.264 °W

      Foster City, CA

      Treasure Isle Station68°
      Updated: 11:38 PM PDT on October 4, 2026 (GMT -7)
      5 minutes ago
      90°
      61°
      68
      Feels Like 68
      Clear
      N
      2
      Same 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
        Mon 10/05
        Low 62°f
         3% Precip. / 0 in
        Clear skies. Low 62F. Winds light and variable.
        Tomorrow
        Tue 10/06
        High 87°f
         5% Precip. / 0 in
        A mainly sunny sky. High 87F. Winds NNW at 10 to 15 mph.
        Tomorrow night
        Tue 10/06
        Low 62°f
         6% Precip. / 0 in
        Mainly clear early, then a few clouds later on. Low 62F. Winds NW at 5 to 10 mph.
        Hourly Forecast
        Now
        69°
        12AM
        69°
        1AM
        68°
        2AM
        67°
        3AM
        66°
        4AM
        65°
        5AM
        64°
        6AM
        64°
        7AM
        63°
        7:08AM
        Sunrise
        8AM
        65°
        9AM
        69°
        10AM
        72°
        11AM
        76°
        12PM
        79°
        1PM
        81°
        2PM
        83°
        3PM
        85°
        4PM
        86°
        5PM
        86°
        6PM
        82°
        6:46PM
        Sunset
        7PM
        77°
        8PM
        74°
        9PM
        72°
        10PM
        70°
        11PM
        70°
        Precipitation
        5%
        Pollen
        Ragweed Pollen
        Moderate
        Air Quality
        52
        Moderate
        UV Index
        0
        Low
        Additional Conditions
        1. Pressure 29.95 in
        2. Visibility 9 miles
        3. Clouds Clear
        4. Dew Point58°F
        5. Humidity 67%
        6. Rainfall 0 in
        7. Snow Depth 0 in
         KSQL Station History
        Almanac for October 4, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 90°F 77°F 101°F 1980
        4. Low 61°F 52°F 39°F 1931
        5. Rain/Snow Depth
        6. Precipitation 0 in 3 in -
        7. Snow 0 in 0 in -
        Almanac for October 5, 2026
        1. Forecast Average Record
        2. Temperature
        3. High 87°F 77°F 99°F
        4. Low 62°F 52°F 39°F
        Astronomy
        1. Sun Rise Set
        2. Actual Time 7:07 AM 6:47 PM
        3. Civil Twilight 6:41 AM 7:13 PM
        4. Nautical Twilight 6:10 AM 7:43PM
        5. Astronomical Twilight 5:40 AM 8:14 PM
        1. Length of Visible Light 12h 32m
        2. Length of Day 11h 39m
        3. Tomorrow will be 2 minutes 23 seconds shorter
        1. Moon 12:26 AM 3:39 PM
        2. Waning Crescent41% of the Moon is Illuminated
        Oct 10
        New Moon
        Oct 18
        Waxing Half First Qtr
        Oct 25
        Full Moon
        Nov 1
        Waning Half Last Qtr
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