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    • Tonight

      Feb 20

      29° Lo F
      Clear to partly cloudy
      • 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: Low
    • Tue

      Feb 21

      66° /35°
      Sunny much of the time
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    • Wed

      Feb 22

      66° /36°
      Sun and some clouds
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    • Thu

      Feb 23

      55° /19°
      Partly sunny; windy, cooler
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    • Fri

      Feb 24

      48° /19°
      Mostly sunny and chilly
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More

    Day

    58°Hi RealFeel® 56° Precipitation 2%
    Milder with some clouds, then sunny
    • NW 12 mph
    • Gusts: 26 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

    29°Lo RealFeel® 26° Precipitation 0%
    Clear to partly cloudy
    • NW 6 mph
    • Gusts: 13 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 Mateo Pollen Levels Feb 20

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

      Low

    • Ragweed Pollen

      Low

    • Mold

      Low

    • Grass Pollen

      Low

    Temperature History

    more Historical Weather Data >
      Today Normal Record 2/20/2016
    High 58° 55° N/A 68°
    Low 29° 21° N/A 18°

    Sunrise/Sunset

    • Sunrise: 6:52 AM
    • Sunset: 5:58 PM
    • Duration: 11:06 hr

    Moonrise/Moonset

    • Moonrise: 2:16 AM
    • Moonset: 12:48 PM
    • Duration: 10:32 hr
    Astronomy

    Mon. Pollen

    Mon. Dust & Dander

    Mon. Wind Maps