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    • Tonight

      May 28

      53° Lo
      Areas of low clouds
      • Ragweed Pollen
        • Ragweed Pollen
        • Grass Pollen
        • Tree Pollen
        • Mold
        • Dust & Dander
        • Air Quality Index
      • Ragweed Pollen
      • Weather
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Moderate
      More
    • Mon

      May 29

      63° /54°F
      Partly sunny
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Moderate
    • Tue

      May 30

      63° /56°
      Low clouds breaking
      • Low
      • ragweed pollen levels
      • Grass Pollen: Moderate
      • Ragweed Pollen: Low
      • Tree Pollen: High
      More
    • Wed

      May 31

      66° /55°
      Partly sunny, a shower; cool
      • Low
      • ragweed pollen levels
      • Grass Pollen: Moderate
      • Ragweed Pollen: Low
      • Tree Pollen: High
      More
    • Thu

      Jun 1

      66° /53°
      Areas of low clouds, then sun
      • Low
      • ragweed pollen levels
      • Grass Pollen: Moderate
      • Ragweed Pollen: Low
      • Tree Pollen: High
      More

    Day

    63°Hi RealFeel® 65° Precipitation 0%
    Areas of low clouds, then some sun
    • W 13 mph
    • Gusts: 21 mph
    • Max UV Index: 8 (Very High)
    • Thunderstorms: 0%
    • Precipitation: 0 in
    • Rain: 0 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 0 hrs
    • Hours of Rain: 0 hrs

    Night

    54°Lo RealFeel® 48° Precipitation 0%
    Partly cloudy in the evening followed by low clouds late
    • W 12 mph
    • Gusts: 21 mph
    • Max UV Index: N/A
    • Thunderstorms: 0%
    • Precipitation: 0 in
    • Rain: 0 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 0 hrs
    • Hours of Rain: 0 hrs

    San Bruno Pollen Levels May 29

    • Extreme
    • Very High
    • High
    • Moderate
    • Low
    • Tree Pollen

      Moderate

    • Ragweed Pollen

      Low

    • Mold

      Low

    • Grass Pollen

      Low

    Temperature History

    more Historical Weather Data >
      Today Normal Record 5/29/2016
    High 63° 69° 94° (1975) 72°
    Low 54° 53° 45° (1951) 53°

    Sunrise/Sunset

    • Sunrise: 5:51 AM
    • Sunset: 8:23 PM
    • Duration: 14:32 hr

    Moonrise/Moonset

    • Moonrise: 10:03 AM
    • Moonset: 12:21 AM
    • Duration: 14:18 hr
    Astronomy

    Mon. Pollen

    Mon. Dust & Dander

    Mon. Wind Maps