• Today

    Sep 17

    89°Lo 61°

    Sun mixing with clouds

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

    Sep 18

    83°Lo 58°

    Partly sunny

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

    Sep 19

    88°Lo 60°

    Mostly sunny

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

    Sep 20

    88°Lo 59°

    Plenty of sunshine

    Low ragweed pollen levels
    • Precip
      1%
    • Wind
      Speed
      5 mph
    • Cloud
      Cover
      0%
    more
  • Sun

    Sep 21

    87°Lo 58°

    Plenty of sunshine

    Ragweed Pollen Weather
    • Precip
      1%
    • Wind
      Speed
      5 mph
    • Cloud
      Cover
      0%
    more
Next Previous
Hi 89° RealFeel® 87° Precipitation 10%

Day

N

E

S

W

  • SSW 8 mph
  • Gusts: 15 mph

Sunshine mixing with some clouds

  • Max UV Index: 6 (High)
  • Thunderstorms: 5%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 61° RealFeel® 60° Precipitation 25%

Night

N

E

S

W

  • SE 4 mph
  • Gusts: 9 mph

Mostly cloudy

  • Max UV Index: N/A
  • Thunderstorms: 12%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs

Loomis Pollen Levels - September 17

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

    Pollen

    Low

  • Weed

    Pollen

    Low

  • Tree

    Pollen

    Low

  • Mold

    Pollen

    Low

Temperature History - Sep 17

more Historical Weather Data >
  Today Normal Record 9/17/2013
High 89° 85° 100° (1979) 75°
Low 61° 59° 45° (2006) 59°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:48 AM with 12:22 of sunlight, then sets at 7:10 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 12:55 AM with 14:26 of moolight, then sets at 3:21 PM

Top Story

Loomis Weather Report

San Francisco: Sunshine, Seasonable Temperatures to Continue

September 17, 2014; 7:35 AM ET

The Bay Area will continue to feature sunshine and seasonable temperatures as the summer season comes to a close. more >

Wed. Pollen

Wed. Dust & Dander

Wed. Wind Maps