• Today

    Sep 1

    78°Lo 60°

    Mostly sunny

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

    Sep 2

    71°Lo 59°

    Low clouds followed by sun

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

    Sep 3

    72°Lo 60°

    Low clouds, then sun

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

    Sep 4

    73°Lo 59°

    Partly sunny

    Low ragweed pollen levels
    • Precip
      2%
    • Wind
      Speed
      8 mph
    • Cloud
      Cover
      53%
    more
  • Fri

    Sep 5

    73°Lo 58°

    Clouds, then sun

    Ragweed Pollen Weather
    • Precip
      1%
    • Wind
      Speed
      8 mph
    • Cloud
      Cover
      57%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Mon
5am
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  5am 6am 7am 8am 9am 10am 11am 12pm
Forecast
Cloudy
Partly Cloudy
Partly Cloudy
Sunny
Sunny
Sunny
Sunny
Sunny
Temp (°F) 60° 60° 61° 63° 65° 67° 71° 74°
RealFeel® 58° 58° 59° 63° 66° 71° 77° 79°
Humidity 87% 87% 87% 85% 79% 73% 67% 61%
   
  5am 6am 7am 8am 9am 10am 11am 12pm
Rain
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Snow
 
0%
 
0%
 
0%
 
0%
 
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Ice
 
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  5am 6am 7am 8am 9am 10am 11am 12pm
Wind (mph) 4 SW 4 SW 4 SW 3 WSW 3 WSW 4 WSW 4 WSW 6 W
UV Index 0 0 0 1 2 4 5 7
Cloud Cover 51% 47% 55% 0% 0% 0% 4% 9%
Dew Point 56° 56° 57° 58° 59° 59° 59° 60°
Middle Grid line 75 F Middle Grid line 70 F Middle Grid line 65 F Middle Grid line 60 F Middle Grid line 55 F

Temperature History - Sep 1

more Historical Weather Data >
  Today Normal Record 9/1/2013
High 78° 74° 94° (1955) 74°
Low 60° 56° 49° (1981) 58°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:40 AM with 12:59 of sunlight, then sets at 7:39 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 1:23 PM with 10:29 of moolight, then sets at 11:52 PM

Top Story

San Bruno 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 >

Mon. Pollen

Mon. Dust & Dander

Mon. Wind Maps