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    • Early AM

      Mar 23

      48° Lo
      Partly to mostly cloudy
      • Ragweed Pollen
        • Ragweed Pollen
        • Grass Pollen
        • Tree Pollen
        • Mold
        • Dust & Dander
        • Air Quality Index
      • Ragweed Pollen
      • Weather
      • Grass Pollen: Moderate
      • Ragweed Pollen: Low
      • Tree Pollen: Moderate
      More
    • Today

      Mar 23

      61° /52°F
      Sunny to partly cloudy
      • Low
      • ragweed pollen levels
      • Grass Pollen: Moderate
      • Ragweed Pollen: Low
      • Tree Pollen: Moderate
    • Fri

      Mar 24

      60° /52°
      Breezy with rain at times
      • Low
      • ragweed pollen levels
      • Grass Pollen: Moderate
      • Ragweed Pollen: Low
      • Tree Pollen: Moderate
      More
    • Sat

      Mar 25

      62° /48°
      Partly sunny and chilly
      • Low
      • ragweed pollen levels
      • Grass Pollen: Moderate
      • Ragweed Pollen: Low
      • Tree Pollen: Moderate
      More
    • Sun

      Mar 26

      57° /51°
      Spotty afternoon showers
      • Low
      • ragweed pollen levels
      • Grass Pollen: Moderate
      • Ragweed Pollen: Low
      • Tree Pollen: Moderate
      More

    Day

    61°Hi RealFeel® 64° Precipitation 20%
    Sunny to partly cloudy
    • W 9 mph
    • Gusts: 14 mph
    • Max UV Index: 6 (High)
    • Thunderstorms: 7%
    • 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® 48° Precipitation 25%
    Considerable clouds
    • SSE 8 mph
    • Gusts: 15 mph
    • Max UV Index: N/A
    • Thunderstorms: 3%
    • 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 Mar 23

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

      Moderate

    • Ragweed Pollen

      Low

    • Mold

      Low

    • Grass Pollen

      Moderate

    Temperature History

    more Historical Weather Data >
      Today Normal Record 3/23/2016
    High 61° 64° N/A 65°
    Low 52° 45° N/A 45°

    Sunrise/Sunset

    • Sunrise: 7:09 AM
    • Sunset: 7:24 PM
    • Duration: 12:15 hr

    Moonrise/Moonset

    • Moonrise: 4:24 AM
    • Moonset: 3:01 PM
    • Duration: 10:37 hr
    Astronomy

    Thu. Pollen

    Thu. Dust & Dander

    Thu. Wind Maps