• Early AM

    Jul 24

    Lo 59°

    Partly to mostly cloudy

    Ragweed Pollen Weather
    • Grass
      Pollen
      2 - Low
    • Ragweed
      Pollen
      5 - Low
    • Tree
      Pollen
      7 - Low
    more
  • Today

    Jul 24

    83°Lo 59°

    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

    90°Lo 61°

    Sunshine

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

    Jul 26

    86°Lo 64°

    Partly sunny

    Low ragweed pollen levels
    • Precip
      0%
    • Wind
      Speed
      6 mph
    • Cloud
      Cover
      27%
    more
  • Sun

    Jul 27

    81°Lo 59°

    Partly sunny

    Low ragweed pollen levels
    • Precip
      1%
    • Wind
      Speed
      6 mph
    • Cloud
      Cover
      51%
    more
Next Previous
Clear 65° Lo 61° RealFeel® 64° / 60°

N

E

S

W

  • Precipitation: 1%
  • Rain: 0 in
  • Snow: 0 in
  • Humidity: 69%
  • Cloud Cover: 1%
  • Dew Point: 53° F
  • Visibility: 10 mi
3 mph

Temperature History - Jul 25

more Historical Weather Data >
  Today Normal Record 7/25/2013
High 90° N/A N/A 77°
Low 61° N/A N/A 58°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:06 AM with 14:17 of sunlight, then sets at 8:23 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 5:10 AM with 14:15 of moolight, then sets at 7:25 PM

Top Story

Castro Valley 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.

Fri. Pollen

Fri. Dust & Dander

Fri. Wind Maps