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Severe weather outbreak to peak Friday with tornadoes. Click for the forecast. Chevron right

Altadena, CA

57°F
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Altadena

California

57°
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Altadena, CA Weather
Today WinterCast Local {stormName} Tracker Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

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1 AM

56°
RealFeel® 54°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 7%
Chevron down
Mostly clear

WindNNE 6 mph

Air QualityPoor

Wind Gusts7 mph

Humidity65%

Indoor Humidity43% (Ideal Humidity)

Dew Point45° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover24%

Visibility10 mi

Cloud Ceiling34000 ft

2 AM

56°
RealFeel® 53°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 7%
Chevron down
Mostly clear

WindNE 7 mph

Air QualityPoor

Wind Gusts8 mph

Humidity70%

Indoor Humidity45% (Ideal Humidity)

Dew Point46° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover10%

Visibility10 mi

Cloud Ceiling30000 ft

3 AM

55°
RealFeel® 53°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 7%
Chevron down
Mostly clear

WindNE 7 mph

Air QualityPoor

Wind Gusts8 mph

Humidity65%

Indoor Humidity41% (Ideal Humidity)

Dew Point44° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover10%

Visibility10 mi

Cloud Ceiling30000 ft

4 AM

55°
RealFeel® 52°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 7%
Chevron down
Mostly clear
alerts

Wind Advisory

4:00 AM Friday - 2:00 PM Friday

WindNE 7 mph

Air QualityPoor

Wind Gusts8 mph

Humidity59%

Indoor Humidity37% (Ideal Humidity)

Dew Point41° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover10%

Visibility10 mi

Cloud Ceiling30000 ft

5 AM

54°
RealFeel® 52°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 7%
Chevron down
Clear
alerts

Wind Advisory

4:00 AM Friday - 2:00 PM Friday

WindNE 7 mph

Air QualityPoor

Wind Gusts8 mph

Humidity54%

Indoor Humidity33% (Slightly Dry)

Dew Point38° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

6 AM

54°
RealFeel® 51°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 7%
Chevron down
Clear
alerts

Wind Advisory

4:00 AM Friday - 2:00 PM Friday

WindNE 7 mph

Air QualityPoor

Wind Gusts8 mph

Humidity50%

Indoor Humidity30% (Slightly Dry)

Dew Point35° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

7 AM

55°
RealFeel® 54°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 5%
Chevron down
Sunny
alerts

Wind Advisory

4:00 AM Friday - 2:00 PM Friday

RealFeel Shade™54°

WindNE 7 mph

Air QualityPoor

Max UV Index0.5 (Low)

Wind Gusts8 mph

Humidity42%

Indoor Humidity41% (Slightly Dry)

Dew Point33° F

AccuLumen Brightness Index™3 (Dull)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

8 AM

59°
RealFeel® 58°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 0%
Chevron down
Sunny
alerts

Wind Advisory

4:00 AM Friday - 2:00 PM Friday

RealFeel Shade™56°

WindNE 8 mph

Air QualityPoor

Max UV Index1.5 (Low)

Wind Gusts10 mph

Humidity35%

Indoor Humidity40% (Slightly Dry)

Dew Point31° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

9 AM

62°
RealFeel® 63°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Sunny
alerts

Wind Advisory

4:00 AM Friday - 2:00 PM Friday

RealFeel Shade™59°

WindNE 9 mph

Air QualityPoor

Max UV Index2.6 (Moderate)

Wind Gusts10 mph

Humidity31%

Indoor Humidity39% (Slightly Dry)

Dew Point31° F

AccuLumen Brightness Index™10 (Very Bright)

Cloud Cover2%

Visibility10 mi

Cloud Ceiling30000 ft

10 AM

65°
RealFeel® 68°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Sunny
alerts

Wind Advisory

4:00 AM Friday - 2:00 PM Friday

RealFeel Shade™62°

WindNE 9 mph

Air QualityPoor

Max UV Index4.2 (Moderate)

Wind Gusts12 mph

Humidity28%

Indoor Humidity40% (Slightly Dry)

Dew Point31° F

AccuLumen Brightness Index™10 (Very Bright)

Cloud Cover1%

Visibility10 mi

Cloud Ceiling30000 ft

11 AM

68°
RealFeel® 73°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Sunny
alerts

Wind Advisory

4:00 AM Friday - 2:00 PM Friday

RealFeel Shade™65°

WindNE 9 mph

Air QualityPoor

Max UV Index6.1 (High)

Wind Gusts12 mph

Humidity25%

Indoor Humidity25% (Slightly Dry)

Dew Point31° F

AccuLumen Brightness Index™10 (Very Bright)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

12 PM

71°
RealFeel® 77°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Sunny
alerts

Wind Advisory

4:00 AM Friday - 2:00 PM Friday

RealFeel Shade™68°

WindE 9 mph

Air QualityFair

Max UV Index8.3 (Very High)

Wind Gusts12 mph

Humidity23%

Indoor Humidity23% (Slightly Dry)

Dew Point31° F

AccuLumen Brightness Index™10 (Very Bright)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

1 PM

74°
RealFeel® 80°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Sunny
alerts

Wind Advisory

4:00 AM Friday - 2:00 PM Friday

RealFeel Shade™71°

WindSSE 10 mph

Air QualityFair

Max UV Index9.3 (Very High)

Wind Gusts12 mph

Humidity20%

Indoor Humidity20% (Slightly Dry)

Dew Point30° F

AccuLumen Brightness Index™10 (Very Bright)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

2 PM

76°
RealFeel® 82°
Very Warm
RealFeel Guide
Very Warm
82° to 89°
Older adults, infants, and those with sensitive medical conditions should minimize outdoor activity, especially in the sunshine.
LEARN MORE
rain drop 0%
Chevron down
Sunny

RealFeel Shade™73°

WindS 8 mph

Air QualityFair

Max UV Index8.3 (Very High)

Wind Gusts10 mph

Humidity19%

Indoor Humidity19% (Slightly Dry)

Dew Point30° F

AccuLumen Brightness Index™10 (Very Bright)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

3 PM

77°
RealFeel® 82°
Very Warm
RealFeel Guide
Very Warm
82° to 89°
Older adults, infants, and those with sensitive medical conditions should minimize outdoor activity, especially in the sunshine.
LEARN MORE
rain drop 0%
Chevron down
Sunny

RealFeel Shade™74°

WindSSW 8 mph

Air QualityPoor

Max UV Index6.1 (High)

Wind Gusts12 mph

Humidity18%

Indoor Humidity18% (Slightly Dry)

Dew Point30° F

AccuLumen Brightness Index™10 (Very Bright)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

4 PM

76°
RealFeel® 79°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Sunny

RealFeel Shade™73°

WindSW 8 mph

Air QualityPoor

Max UV Index4.2 (Moderate)

Wind Gusts13 mph

Humidity18%

Indoor Humidity18% (Slightly Dry)

Dew Point30° F

AccuLumen Brightness Index™10 (Very Bright)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

5 PM

75°
RealFeel® 76°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Sunny

RealFeel Shade™72°

WindSW 7 mph

Air QualityPoor

Max UV Index2.6 (Moderate)

Wind Gusts15 mph

Humidity20%

Indoor Humidity20% (Slightly Dry)

Dew Point31° F

AccuLumen Brightness Index™10 (Very Bright)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

6 PM

73°
RealFeel® 73°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Sunny

RealFeel Shade™71°

WindWSW 6 mph

Air QualityPoor

Max UV Index1.5 (Low)

Wind Gusts10 mph

Humidity22%

Indoor Humidity22% (Slightly Dry)

Dew Point32° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

7 PM

71°
RealFeel® 70°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Sunny

RealFeel Shade™70°

WindW 6 mph

Air QualityPoor

Max UV Index0.5 (Low)

Wind Gusts7 mph

Humidity24%

Indoor Humidity24% (Slightly Dry)

Dew Point32° F

AccuLumen Brightness Index™3 (Dull)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

8 PM

68°
RealFeel® 66°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Clear

WindNW 5 mph

Air QualityPoor

Wind Gusts6 mph

Humidity27%

Indoor Humidity27% (Slightly Dry)

Dew Point32° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

65°
RealFeel® 63°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Clear

WindNNE 6 mph

Air QualityPoor

Wind Gusts7 mph

Humidity29%

Indoor Humidity40% (Slightly Dry)

Dew Point32° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

10 PM

64°
RealFeel® 62°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 0%
Chevron down
Clear

WindNE 6 mph

Air QualityPoor

Wind Gusts7 mph

Humidity28%

Indoor Humidity39% (Slightly Dry)

Dew Point30° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover1%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

63°
RealFeel® 62°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 0%
Chevron down
Clear

WindNE 6 mph

Air QualityPoor

Wind Gusts7 mph

Humidity26%

Indoor Humidity37% (Dry)

Dew Point28° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover2%

Visibility10 mi

Cloud Ceiling30000 ft

Hourly Weather Forecast for Altadena

AccuWeather's hourly forecast for Altadena provides hour-by-hour temperatures, RealFeel® Temperature, and precipitation probability through the next 10 days. The current hour shows 56° with a RealFeel® of 54°, mostly clear with a 7% chance of precipitation. Each hourly forecast includes wind speed, humidity, air quality, UV index, and the AccuLumen Brightness Index™, AccuWeather's measure of perceived outdoor light intensity. Forecasts are generated by proprietary systems developed by AccuWeather meteorologists since 1962.

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