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    • Today

      Oct 1

      68° /55°
      Low clouds, then sunshine
      • Ragweed Pollen
        • Ragweed Pollen
        • Grass Pollen
        • Tree Pollen
        • Mold
        • Dust & Dander
        • Air Quality Index
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Moderate
      More
    • Sun

      Oct 2

      66° /52°
      A shower in the afternoon
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Moderate
      More
    • Mon

      Oct 3

      65° /57°
      Rain and drizzle in the p.m.
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    • Tue

      Oct 4

      69° /52°
      Cool with some sun returning
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Moderate
      More
    • Wed

      Oct 5

      69° /52°F
      Low clouds, then sun
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low

    Day

    69°Hi RealFeel® 71° Precipitation 5%
    Low clouds giving way to sunshine
    • WNW 8 mph
    • Gusts: 15 mph
    • Max UV Index: 5 (Moderate)
    • 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

    52°Lo RealFeel® 52° Precipitation 3%
    Clear to partly cloudy in the evening followed by low clouds late
    • NW 5 mph
    • Gusts: 10 mph
    • Max UV Index: N/A
    • Thunderstorms: 1%
    • Precipitation: 0 in
    • Rain: 0 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 0 hrs
    • Hours of Rain: 0 hrs

    Temperature History

    more Historical Weather Data >
      Today Normal Record 10/5/2015
    High 69° 72° 99° (1987) 74°
    Low 52° 54° 47° (2009) 57°

    Sunrise/Sunset

    • Sunrise: 7:09 AM
    • Sunset: 6:45 PM
    • Duration: 11:36 hr

    Moonrise/Moonset

    • Moonrise: 11:18 AM
    • Moonset: 9:51 PM
    • Duration: 10:33 hr
    Astronomy

    San Bruno Weather Report

    Cooler air, showers to aid in wildfire efforts across California this weekend

    October 1, 2016; 9:10 AM ET

    Improving weather over the next several days will aid officials in battling wildfires across California. More >

    Wed. Dust & Dander

    Wed. Wind Maps