• Early AM

    Aug 31

    Lo 60°

    Partly cloudy

    Ragweed Pollen Weather
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      5 - Low
    • Tree
      Pollen
      7 - Low
    more
  • Today

    Aug 31

    73°Lo 59°

    Low clouds, then some sun

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      5 - Low
    • Tree
      Pollen
      7 - Low
  • Mon

    Sep 1

    76°Lo 60°

    Clouds breaking for sun

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      5 - Low
    • Tree
      Pollen
      7 - Low
    more
  • Tue

    Sep 2

    71°Lo 59°

    Low clouds, then sunshine

    Low ragweed pollen levels
    • Precip
      1%
    • Wind
      Speed
      8 mph
    • Cloud
      Cover
      59%
    more
  • Wed

    Sep 3

    71°Lo 58°

    Low clouds, then sun

    Low ragweed pollen levels
    • Precip
      2%
    • Wind
      Speed
      8 mph
    • Cloud
      Cover
      57%
    more
Next Previous
Hi 73° RealFeel® 74° Precipitation 1%

Day

N

E

S

W

  • W 9 mph
  • Gusts: 17 mph

Low clouds followed by some sun

  • Max UV Index: 7 (High)
  • Thunderstorms: 2%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 59° RealFeel® 57° Precipitation 2%

Night

N

E

S

W

  • W 6 mph
  • Gusts: 13 mph

Clear early, then areas of low clouds and fog

  • 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

San Francisco Pollen Levels - August 31

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

    Pollen

    Low

  • Weed

    Pollen

    Low

  • Tree

    Pollen

    Low

  • Mold

    Pollen

    Low

Temperature History - Aug 31

more Historical Weather Data >
  Today Normal Record 8/31/2013
High 73° 70° 87° (1943) 65°
Low 59° 55° 48° (1910) 56°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:39 AM with 13:02 of sunlight, then sets at 7:41 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 12:24 PM with 10:42 of moolight, then sets at 11:06 PM

Top Story

San Francisco Weather Report

San Francisco: Bright, Sunny for First Week of September

August 31, 2014; 3:14 AM ET

San Francisco will see abundant sunshine through at least Thursday. more >

Sun. Pollen

Sun. Dust & Dander

Sun. Wind Maps