• Today

    Apr 20

    80°Lo 49°

    Pleasant and warmer

    Low indoor dust & dander levels
    • Grass
      Pollen
      2 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      50 - Moderate
    more
  • Mon

    Apr 21

    71°Lo 51°

    Partly sunny

    Low indoor dust & dander levels
    • Grass
      Pollen
      2 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      50 - Moderate
  • Tue

    Apr 22

    63°Lo 46°

    Cooler with a passing shower

    Low indoor dust & dander levels
    • Grass
      Pollen
      2 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      50 - Moderate
    more
  • Wed

    Apr 23

    68°Lo 50°

    Mostly sunny and cool

    Low indoor dust & dander levels
    • Precip
      1%
    • Wind
      Speed
      10 mph
    • Cloud
      Cover
      12%
    more
  • Thu

    Apr 24

    70°Lo 52°

    Times of clouds and sun

    Low indoor dust & dander levels
    • Precip
      11%
    • Wind
      Speed
      8 mph
    • Cloud
      Cover
      46%
    more
Next Previous
Hi 71° RealFeel® 74° Precipitation 15%

Day

N

E

S

W

  • WNW 7 mph
  • Gusts: 12 mph

Partly sunny

  • Max UV Index: 7 (High)
  • Thunderstorms: 6%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 51° RealFeel® 47° Precipitation 25%

Night

N

E

S

W

  • W 6 mph
  • Gusts: 11 mph

Mostly cloudy

  • Max UV Index: N/A
  • Thunderstorms: 4%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs

San Jose Pollen Levels - April 21

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

    Pollen

    Low

  • Weed

    Pollen

    Low

  • Tree

    Pollen

    Moderate

  • Mold

    Pollen

    Low

Temperature History - Apr 21

more Historical Weather Data >
  Today Normal Record 4/21/2013
High 71° 70° 92° (2009) 84°
Low 51° 49° 37° (1968) 49°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:25 AM with 13:23 of sunlight, then sets at 7:48 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 1:21 AM with 10:38 of moolight, then sets at 11:59 AM

Top Story

San Jose Weather Report

Chance of Rain in San Francisco on Tuesday

April 20, 2014; 3:10 PM ET

There hasn't been any measurable precipitation in San Francisco since April 4. more >

Is it a Cold or the Flu?

Apr 19, 2014; 5:00 AM ET Symptoms caused by the common cold can often resemble those associated with the influenza virus, so how do you differentiate between the two?

Mon. Pollen

Mon. Dust & Dander

Mon. Wind Maps