• Early AM

    Apr 21

    Lo 47°

    Low clouds

    Asthma Weather
    • Hi
      RealFeel
      57°
    • UV
      8 - Very High
    • Air Qual.
      Good
    more
  • Today

    Apr 21

    63°Lo 47°

    Cooler with periods of sun

    Beneficial weather for asthma
    • Hi
      RealFeel
      64°
    • UV
      6 - High
    • Air Qual.
      Good
  • Tue

    Apr 22

    59°Lo 44°

    Mostly cloudy with a shower

    Beneficial weather for asthma
    • Hi
      RealFeel
      57°
    • UV
      6 - High
    • Air Qual.
      Good
    more
  • Wed

    Apr 23

    62°Lo 51°

    Partly sunny

    Beneficial weather for asthma
    • Hi
      RealFeel
      66°
    • UV
      7 - High
    • Cloud
      Cover
      40%
    more
  • Thu

    Apr 24

    65°Lo 54°

    Times of clouds and sun

    Beneficial weather for asthma
    • Hi
      RealFeel
      67°
    • UV
      6 - High
    • Cloud
      Cover
      69%
    more
Next Previous
Next 8 hours >
  Mon
12am
1am 2am 3am 4am 5am 6am 7am
  12am 1am 2am 3am 4am 5am 6am 7am
Forecast
Mostly Clear
Mostly Clear
Mostly Cloudy
Cloudy
Cloudy
Cloudy
Cloudy
Cloudy
Temp (°F) 53° 52° 51° 49° 48° 48° 47° 48°
RealFeel® 50° 49° 48° 45° 44° 44° 42° 43°
Humidity 75% 78% 80% 84% 88% 90% 92% 89%
   
  12am 1am 2am 3am 4am 5am 6am 7am
Rain
 
0%
 
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0%
 
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0%
Snow
 
0%
 
0%
 
0%
 
0%
 
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Ice
 
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  12am 1am 2am 3am 4am 5am 6am 7am
Wind (mph) 5 SW 5 SW 5 SW 5 SW 5 SW 5 SW 6 SW 6 SW
UV Index 0 0 0 0 0 0 0 0
Cloud Cover 17% 18% 88% 90% 90% 93% 95% 95%
Dew Point 45° 46° 45° 45° 45° 45° 44° 45°
Middle Grid line 55 F Middle Grid line 50 F Middle Grid line 45 F

Temperature History - Apr 21

more Historical Weather Data >
  Today Normal Record 4/21/2013
High 63° 67° N/A 82°
Low 47° 47° N/A 49°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:27 AM with 13:22 of sunlight, then sets at 7:49 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 12:32 AM with 10:23 of moolight, then sets at 10:55 AM

Top Story

Berkeley Weather Report

Chance of Rain in San Francisco on Tuesday

April 20, 2014; 9:00 PM ET

There hasn't been any measurable precipitation in San Francisco since April 4. more >

Is it a Cold or the Flu?

Apr 19, 2014; 5:00 AM ET Symptoms caused by the common cold can often resemble those associated with the influenza virus, so how do you differentiate between the two?

Mon. Air Quality

Mon. Asthma Risk

Mon. UV Index