• Tonight

    Jul 23

    Lo 60°

    Increasing clouds

    Ragweed Pollen Weather
    • Grass
      Pollen
      2 - Low
    • Ragweed
      Pollen
      5 - Low
    • Tree
      Pollen
      7 - Low
  • Thu

    Jul 24

    83°Lo 61°

    A full day of sunshine

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

    Jul 25

    89°Lo 63°

    Areas of low clouds, then sun

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

    Jul 26

    83°Lo 63°

    Areas of low clouds, then sun

    Low ragweed pollen levels
    • Precip
      1%
    • Wind
      Speed
      6 mph
    • Cloud
      Cover
      50%
    more
  • Sun

    Jul 27

    83°Lo 63°

    Partly sunny

    Ragweed Pollen Weather
    • Precip
      1%
    • Wind
      Speed
      6 mph
    • Cloud
      Cover
      35%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Wed
10am
11am 12pm 1pm 2pm 3pm 4pm 5pm
  10am 11am 12pm 1pm 2pm 3pm 4pm 5pm
Forecast
Cloudy
Partly Sunny
Sunny
Sunny
Sunny
Sunny
Sunny
Sunny
Temp (°F) 72° 73° 75° 76° 77° 75° 76° 75°
RealFeel® 75° 76° 80° 80° 79° 75° 76° 72°
Humidity 59% 57% 55% 55% 55% 59% 62% 64%
   
  10am 11am 12pm 1pm 2pm 3pm 4pm 5pm
Rain
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
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  10am 11am 12pm 1pm 2pm 3pm 4pm 5pm
Wind (mph) 0 8 NNE 7 NNE 10 N 13 N 15 NNW 14 NNW 18 NNW
UV Index 2 6 8 9 8 7 5 3
Cloud Cover 100% 35% 0% 0% 0% 0% 0% 0%
Dew Point 57° 57° 58° 59° 60° 60° 62° 62°
Middle Grid line 80 F Middle Grid line 75 F Middle Grid line 70 F

Temperature History - Jul 23

more Historical Weather Data >
  Today Normal Record 7/23/2013
High 77° 79° N/A 75°
Low 60° 56° N/A 60°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:05 AM with 14:19 of sunlight, then sets at 8:24 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 3:29 AM with 14:28 of moolight, then sets at 5:57 PM

Top Story

Los Altos Weather Report

San Francisco: Sunny Skies, No Drought Relief in Sight

July 23, 2014; 10:54 AM ET

With partly sunny skies ahead, the San Francisco area will not be receiving needed drought relief for an extended stretch of time. more >

Battling the Common Cold

Jun 23, 2014; 5:00 AM ET Marja Martinez talks about identifying and fighting the common cold.

Wed. Pollen

Wed. Dust & Dander

Wed. Wind Maps