• Tonight

    Sep 1

    Lo 61°

    Clear and mild

    Asthma Weather
    • Hi
      RealFeel
      86°
    • UV
      7 - High
    • Air Qual.
      Good
    more
  • Tue

    Sep 2

    77°Lo 60°

    Low clouds, then sunshine

    Beneficial weather for asthma
    • Hi
      RealFeel
      81°
    • UV
      7 - High
    • Air Qual.
      Good
    more
  • Wed

    Sep 3

    76°Lo 60°

    Clouds, then sun

    Beneficial weather for asthma
    • Hi
      RealFeel
      79°
    • UV
      7 - High
    • Air Qual.
      Good
  • Thu

    Sep 4

    76°Lo 60°

    Partly sunny

    Beneficial weather for asthma
    • Hi
      RealFeel
      78°
    • UV
      6 - High
    • Cloud
      Cover
      57%
    more
  • Fri

    Sep 5

    77°Lo 59°

    Mostly sunny and beautiful

    Beneficial weather for asthma
    • Hi
      RealFeel
      79°
    • UV
      7 - High
    • Cloud
      Cover
      19%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Wed
9am
10am 11am 12pm 1pm 2pm 3pm 4pm
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Forecast
Cloudy
Cloudy
Cloudy
Cloudy
Cloudy
Mostly Sunny
Mostly Sunny
Mostly Sunny
Temp (°F) 63° 65° 69° 71° 73° 74° 76° 75°
RealFeel® 63° 68° 73° 76° 77° 79° 79° 75°
Humidity 80% 73% 67% 64% 62% 60% 57% 59%
   
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Rain
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Wind (mph) 4 SE 3 SE 3 WNW 4 NW 5 NW 6 NW 7 NW 8 NW
UV Index 1 3 4 5 5 7 5 4
Cloud Cover 95% 95% 95% 95% 95% 11% 11% 11%
Dew Point 57° 57° 57° 59° 59° 60° 60° 59°
Middle Grid line 80 F Middle Grid line 75 F Middle Grid line 70 F Middle Grid line 65 F Middle Grid line 60 F

Temperature History - Sep 3

more Historical Weather Data >
  Today Normal Record 9/3/2013
High 76° 80° N/A 81°
Low 60° 54° N/A 55°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:40 AM with 12:55 of sunlight, then sets at 7:35 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 3:17 PM with 10:25 of moolight, then sets at 1:42 AM

Top Story

Los Altos Weather Report

San Francisco: Bright, Sunny for First Week of September

September 1, 2014; 9:25 AM ET

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

The Dangers of Bus Travel

Dec 10, 2012; 5:00 AM ET While bus transportation is one of the most affordable, it is important to know which motor coach companies rank highest in safety.

Wed. Asthma Risk

Wed. UV Index