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    • Tonight

      May 20

      48° Lo F
      Becoming 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
    • Mon

      May 21

      74° /51°
      Clouds giving way to some sun
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    • Tue

      May 22

      71° /53°
      Partly sunny; nice
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    • Wed

      May 23

      65° /50°
      Mostly sunny; cool
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    • Thu

      May 24

      70° /50°
      Sun and some clouds; pleasant
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More

    Day

    69°Hi RealFeel® 74° Precipitation 2%
    Low clouds followed by some sun
    • Winds from the
    • WNW 10 mph
    • Gusts: 25 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

    48°Lo RealFeel® 48° Precipitation 1%
    Becoming cloudy
    • Winds from the
    • WNW 6 mph
    • Gusts: 18 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

    Petaluma Pollen Levels May 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 5/20/2017
    High 69° 73° N/A 93°
    Low 48° 48° N/A 48°

    Sunrise/Sunset

    • Sunrise: 5:56 AM
    • Sunset: 8:19 PM
    • Duration: 14:23 hr

    Moonrise/Moonset

    • Moonrise: 11:16 AM
    • Moonset: 1:36 AM
    • Duration: 14:20 hr
    Astronomy

    Sun. Pollen

    Sun. Dust & Dander

    Sun. Wind Maps