• Tonight

    Mar 1

    Lo 38°

    Mainly clear and chilly

    Ragweed Pollen Weather
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      50 - Moderate
  • Mon

    Mar 2

    61°Lo 37°

    A couple of thunderstorms

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      50 - Moderate
    more
  • Tue

    Mar 3

    63°Lo 35°

    Plenty of sunshine

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      50 - Moderate
    more
  • Wed

    Mar 4

    65°Lo 36°

    Abundant sunshine

    Low ragweed pollen levels
    • Precip
      3%
    • Wind
      Speed
      5 mph
    • Cloud
      Cover
      13%
    more
  • Thu

    Mar 5

    66°Lo 37°

    Plenty of sun

    Low ragweed pollen levels
    • Precip
      3%
    • Wind
      Speed
      5 mph
    • Cloud
      Cover
      0%
    more
Next Previous
Hi 62° RealFeel® 64° Precipitation 2%

Day

N

E

S

W

  • SW 6 mph
  • Gusts: 15 mph

Sunny

  • Max UV Index: 4 (Moderate)
  • Thunderstorms: 1%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 38° RealFeel® 39° Precipitation 9%

Night

N

E

S

W

  • SSW 5 mph
  • Gusts: 7 mph

Clear to partly cloudy and chilly

  • 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 - March 1

  • Extreme
  • Very High
  • High
  • Moderate
  • Low
  • Grass

    Pollen

    Low

  • Weed

    Pollen

    Low

  • Tree

    Pollen

    Moderate

  • Mold

    Pollen

    Low

Temperature History - Mar 1

more Historical Weather Data >
  Today Normal Record 3/1/2014
High 62° 65° 81° (1929) 67°
Low 38° 43° 27° (1955) 52°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:41 AM with 11:21 of sunlight, then sets at 6:02 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 2:44 PM with 14:01 of moolight, then sets at 4:45 AM

Making a Forecast: The Sixth Sense

Feb 16, 2015; 5:00 AM ET What steps go into making a forecast?

Sun. Pollen

Sun. Dust & Dander

Sun. Wind Maps