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    • Tonight

      Jul 22

      56° Lo F
      Mainly clear
      • 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
    • Sun

      Jul 23

      88° /57°
      Mostly sunny and warm
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    • Mon

      Jul 24

      81° /57°
      A full day of sunshine
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More
    • Tue

      Jul 25

      82° /54°
      A full day of sunshine
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More
    • Wed

      Jul 26

      87° /55°
      Plenty of sunshine
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More

    Day

    89°Hi RealFeel® 91° Precipitation 0%
    Sunny and warm
    • Winds from the
    • SW 8 mph
    • Gusts: 15 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

    56°Lo RealFeel® 55° Precipitation 0%
    Mainly clear
    • Winds from the
    • WSW 7 mph
    • Gusts: 14 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

    Napa Pollen Levels Jul 22

    • 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 7/22/2016
    High 89° 83° 107° (2006) 86°
    Low 56° 55° 45° (1928) 50°

    Sunrise/Sunset

    • Sunrise: 6:02 AM
    • Sunset: 8:28 PM
    • Duration: 14:26 hr

    Moonrise/Moonset

    • Moonrise: 5:18 AM
    • Moonset: 7:58 PM
    • Duration: 14:40 hr
    Astronomy

    Sat. Pollen

    Sat. Dust & Dander

    Sat. Wind Maps