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    • Today

      Jul 24

      81° /56°F
      Decreasing clouds
      • 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
    • Tue

      Jul 25

      83° /55°
      A full day of sunshine
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    • Wed

      Jul 26

      88° /56°
      Abundant sunshine
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More
    • Thu

      Jul 27

      93° /57°
      Hot with plenty of sunshine
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More
    • Fri

      Jul 28

      91° /56°
      Sunny and very warm
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More

    Day

    81°Hi RealFeel® 84° Precipitation 0%
    After a cloudy start, sunshine returns
    • Winds from the
    • SW 9 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® 54° Precipitation 0%
    Mostly clear
    • Winds from the
    • WSW 7 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

    Napa Pollen Levels Jul 24

    • 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 7/24/2016
    High 81° 83° 106° (2006) 83°
    Low 56° 55° 47° (1963) 56°

    Sunrise/Sunset

    • Sunrise: 6:04 AM
    • Sunset: 8:27 PM
    • Duration: 14:23 hr

    Moonrise/Moonset

    • Moonrise: 7:33 AM
    • Moonset: 9:33 PM
    • Duration: 14:00 hr
    Astronomy

    Mon. Pollen

    Mon. Dust & Dander

    Mon. Wind Maps