• Tonight

    May 4

    Lo 50°

    Low clouds

    Asthma Weather
    • Hi
      RealFeel
      70°
    • UV
      8 - Very High
    • Air Qual.
      Good
    more
  • Tue

    May 5

    66°Lo 50°

    Low clouds, then some sun

    Beneficial weather for asthma
    • Hi
      RealFeel
      69°
    • UV
      8 - Very High
    • Air Qual.
      Good
  • Wed

    May 6

    68°Lo 49°

    Mostly sunny and nice

    Beneficial weather for asthma
    • Hi
      RealFeel
      71°
    • UV
      8 - Very High
    • Air Qual.
      Good
    more
  • Thu

    May 7

    68°Lo 49°

    Times of clouds and sun

    Beneficial weather for asthma
    • Hi
      RealFeel
      71°
    • UV
      8 - Very High
    • Cloud
      Cover
      46%
    more
  • Fri

    May 8

    69°Lo 50°

    Cool with periods of sun

    Beneficial weather for asthma
    • Hi
      RealFeel
      71°
    • UV
      7 - High
    • Cloud
      Cover
      70%
    more
Next Previous
Hi 66° RealFeel® 69° Precipitation 2%

Day

N

E

S

W

  • NNW 10 mph
  • Gusts: 18 mph

Low clouds breaking for some sun

  • Max UV Index: 8 (Very High)
  • Thunderstorms: 1%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 50° RealFeel® 48° Precipitation 3%

Night

N

E

S

W

  • W 6 mph
  • Gusts: 14 mph

Partly cloudy in the evening followed by late-night low clouds

  • Max UV Index: N/A
  • Thunderstorms: 0%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs

Temperature History - May 5

more Historical Weather Data >
  Today Normal Record 5/5/2014
High 66° 73° N/A 68°
Low 50° 47° N/A 54°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:09 AM with 13:53 of sunlight, then sets at 8:02 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 9:44 PM with 10:27 of moolight, then sets at 8:11 AM

Los Altos Weather Report

San Francisco: Seasonable Temperatures to Continue Through Week

May 4, 2015; 1:42 PM ET

A pattern of seasonable temperatures will continue through the first part of the new week, with low clouds in the morning and sunny conditions through the afternoon. 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.

Tue. Air Quality

Tue. Asthma Risk

Tue. UV Index