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    • Today

      Jul 21

      70° /55°F
      Mostly sunny
      • 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: Low
    • Sat

      Jul 22

      73° /56°
      Areas of low clouds, then sun
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    • Sun

      Jul 23

      71° /58°
      Areas of low clouds, then sun
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    • Mon

      Jul 24

      70° /58°
      Areas of low clouds, then sun
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More
    • Tue

      Jul 25

      69° /56°
      Plenty of sun
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More

    Day

    70°Hi RealFeel® 73° Precipitation 2%
    Mostly sunny
    • Winds from the
    • W 12 mph
    • Gusts: 18 mph
    • Max UV Index: 8 (Very 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

    55°Lo RealFeel® 54° Precipitation 1%
    Mainly clear early on, then areas of low clouds forming
    • Winds from the
    • WSW 8 mph
    • Gusts: 17 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

    San Francisco Pollen Levels Jul 21

    • 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 7/21/2016
    High 70° 66° 88° (1917) 65°
    Low 55° 54° 48° (1901) 54°

    Sunrise/Sunset

    • Sunrise: 6:04 AM
    • Sunset: 8:28 PM
    • Duration: 14:24 hr

    Moonrise/Moonset

    • Moonrise: 4:18 AM
    • Moonset: 6:59 PM
    • Duration: 14:41 hr
    Astronomy

    Fri. Pollen

    Fri. Dust & Dander

    Fri. Wind Maps