• Early AM

    May 23

    Lo 54°

    Mostly cloudy

    Asthma Weather
    • Hi
      RealFeel
      76°
    • UV
      6 - High
    • Air Qual.
      Good
    more
  • Today

    May 23

    74°Lo 53°

    Partly sunny and pleasant

    Beneficial weather for asthma
    • Hi
      RealFeel
      77°
    • UV
      8 - Very High
    • Air Qual.
      Good
  • Sun

    May 24

    80°Lo 54°

    Partly sunny

    Beneficial weather for asthma
    • Hi
      RealFeel
      84°
    • UV
      8 - Very High
    • Air Qual.
      Good
    more
  • Mon

    May 25

    78°Lo 54°

    Mostly sunny

    Beneficial weather for asthma
    • Hi
      RealFeel
      82°
    • UV
      9 - Very High
    • Cloud
      Cover
      17%
    more
  • Tue

    May 26

    80°Lo 54°

    Sunshine and patchy clouds

    Beneficial weather for asthma
    • Hi
      RealFeel
      84°
    • UV
      8 - Very High
    • Cloud
      Cover
      25%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Sat
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Forecast
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Partly Sunny
Partly Sunny
Partly Sunny
Temp (°F) 55° 54° 55° 55° 55° 57° 59° 61°
RealFeel® 52° 51° 53° 53° 55° 58° 64° 68°
Humidity 84% 85% 85% 85% 83% 81% 76% 69%
   
  3am 4am 5am 6am 7am 8am 9am 10am
Rain
 
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Snow
 
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Ice
 
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  3am 4am 5am 6am 7am 8am 9am 10am
Wind (mph) 8 W 7 W 7 W 6 W 6 W 6 W 6 W 6 WNW
UV Index 0 0 0 0 0 1 3 4
Cloud Cover 89% 86% 82% 80% 77% 45% 45% 45%
Dew Point 50° 50° 51° 50° 50° 51° 52° 51°
Middle Grid line 65 F Middle Grid line 60 F Middle Grid line 55 F Middle Grid line 50 F

Temperature History - May 23

more Historical Weather Data >
  Today Normal Record 5/23/2014
High 74° N/A N/A 91°
Low 53° N/A N/A 59°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:51 AM with 14:25 of sunlight, then sets at 8:16 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 11:07 AM with 13:44 of moolight, then sets at 12:51 AM

Tracy Weather Report

San Francisco: Cool, Cloudy Weather to Linger for Holiday Weekend

May 23, 2015; 5:17 AM ET

More clouds and cooler weather can be expected across the Bay Area through the holiday weekend and into the new week. 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.

Sat. Air Quality

Sat. Asthma Risk

Sat. UV Index