• Today

    Jul 30

    75°Lo 60°

    Partly sunny

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

    Jul 31

    78°Lo 60°

    Areas of low clouds, then sun

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

    Aug 1

    79°Lo 61°

    Areas of low clouds, then sun

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

    Aug 2

    79°Lo 61°

    Mostly sunny

    Low ragweed pollen levels
    • Precip
      1%
    • Wind
      Speed
      9 mph
    • Cloud
      Cover
      11%
    more
  • Sun

    Aug 3

    77°Lo 61°

    Mostly sunny and nice

    Ragweed Pollen Weather
    • Precip
      1%
    • Wind
      Speed
      7 mph
    • Cloud
      Cover
      17%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Thu
9am
10am 11am 12pm 1pm 2pm 3pm 4pm
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Forecast
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Mostly Sunny
Mostly Sunny
Mostly Sunny
Temp (°F) 65° 68° 70° 73° 75° 78° 76° 75°
RealFeel® 66° 71° 74° 77° 79° 81° 79° 75°
Humidity 73% 68% 65% 61% 57% 50% 53% 52%
   
  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) 5 W 5 WNW 6 WNW 7 WNW 8 WNW 9 WNW 10 WNW 10 WNW
UV Index 2 4 6 7 7 8 7 5
Cloud Cover 76% 76% 76% 76% 76% 11% 12% 11%
Dew Point 57° 57° 58° 59° 59° 58° 58° 56°
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 - Jul 31

more Historical Weather Data >
  Today Normal Record 7/31/2013
High 78° 72° 97° (1993) 70°
Low 60° 56° 49° (1956) 54°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:12 AM with 14:07 of sunlight, then sets at 8:19 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 10:39 AM with 12:01 of moolight, then sets at 10:40 PM

Top Story

San Bruno Weather Report

VIDEO: California Wildfires Persist in Sierra Nevada Foothills, Yosemite National Park

July 30, 2014; 1:10 PM ET

A wildfire that has already destroyed more than 60 structures is threatening more in the Sierra Nevada foothills near Plymouth, California, according to state fire officials. more >

Battling the Common Cold

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

Thu. Pollen

Thu. Dust & Dander

Thu. Wind Maps