• Today

    Sep 3

    81°Lo 58°

    Low clouds, then sunshine

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
  • Fri

    Sep 4

    78°Lo 56°

    Low clouds, then sun and cool

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
  • Sat

    Sep 5

    79°Lo 54°

    Low clouds, then sunshine

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
  • Sun

    Sep 6

    86°Lo 58°

    Plenty of sunshine

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
  • Mon

    Sep 7

    89°Lo 57°

    Plenty of sunshine

    Low ragweed pollen levels
    • Grass
      Pollen
      1 - Low
    • Ragweed
      Pollen
      1 - Low
    • Tree
      Pollen
      1 - Low
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Fri
9am
10am 11am 12pm 1pm 2pm 3pm 4pm
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Forecast
Cloudy
Cloudy
Cloudy
Cloudy
Cloudy
Mostly Sunny
Mostly Sunny
Mostly Sunny
Temp (°F) 66° 68° 71° 74° 76° 78° 77° 75°
RealFeel® 66° 70° 74° 78° 81° 83° 81° 77°
Humidity 76% 67% 61% 55% 49% 42% 43% 43%
   
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Rain
 
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Snow
 
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Ice
 
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  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Wind (mph) 5 S 5 S 6 SSW 7 SSW 7 SSW 8 SW 8 SW 9 SW
UV Index 1 2 3 5 6 7 6 4
Cloud Cover 95% 96% 95% 95% 95% 25% 15% 16%
Dew Point 58° 57° 57° 57° 55° 53° 53° 51°
Middle Grid line 80 F Middle Grid line 75 F Middle Grid line 70 F Middle Grid line 65 F

Temperature History - Sep 4

more Historical Weather Data >
  Today Normal Record 9/4/2014
High 78° N/A N/A 81°
Low 56° N/A N/A 65°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:30 AM with 12:47 of sunlight, then sets at 7:17 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 11:51 PM with 14:08 of moolight, then sets at 1:59 PM

Simi Valley Weather Report

Los Angeles: Cooler Conditions in Store for Labor Day Weekend

September 3, 2015; 6:07 PM ET

A cooler start to the weekend is forecast for the Los Angeles area. more >

Fri. Pollen

Fri. Dust & Dander

Fri. Wind Maps