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Altadena, CA

88°F
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Altadena

California

88°
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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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2 PM

90°
RealFeel® 96°
Hot
RealFeel Guide
Hot
90° to 100°
Caution advised. Possible danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
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rain drop 0%
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Mostly sunny
alerts

Heat Advisory

10:00 AM Tuesday - 8:00 PM Thursday

RealFeel Shade™88°

Heat Index89°

WindSSW 8 mph

Air QualityPoor

Max UV Index8.8 (Very High)

Wind Gusts14 mph

Humidity32%

Indoor Humidity32% (Slightly Humid)

Dew Point57° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover21%

Visibility10 mi

Cloud Ceiling33300 ft

3 PM

93°
RealFeel® 97°
Hot
RealFeel Guide
Hot
90° to 100°
Caution advised. Possible danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
rain drop 0%
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Mostly sunny
alerts

Heat Advisory

10:00 AM Tuesday - 8:00 PM Thursday

RealFeel Shade™91°

Heat Index92°

WindSW 8 mph

Air QualityPoor

Max UV Index6.5 (High)

Wind Gusts14 mph

Humidity30%

Indoor Humidity30% (Slightly Humid)

Dew Point57° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

4 PM

92°
RealFeel® 94°
Hot
RealFeel Guide
Hot
90° to 100°
Caution advised. Possible danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
rain drop 0%
Chevron down
Mostly sunny
alerts

Heat Advisory

10:00 AM Tuesday - 8:00 PM Thursday

RealFeel Shade™90°

Heat Index91°

WindSW 8 mph

Air QualityPoor

Max UV Index4.3 (Moderate)

Wind Gusts14 mph

Humidity29%

Indoor Humidity29% (Slightly Humid)

Dew Point56° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

5 PM

90°
RealFeel® 91°
Hot
RealFeel Guide
Hot
90° to 100°
Caution advised. Possible danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
rain drop 0%
Chevron down
Mostly sunny
alerts

Heat Advisory

10:00 AM Tuesday - 8:00 PM Thursday

RealFeel Shade™88°

Heat Index88°

WindSW 8 mph

Air QualityPoor

Max UV Index2.8 (Moderate)

Wind Gusts14 mph

Humidity30%

Indoor Humidity30% (Ideal Humidity)

Dew Point55° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

6 PM

88°
RealFeel® 88°
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.
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rain drop 0%
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Mostly sunny
alerts

Heat Advisory

10:00 AM Tuesday - 8:00 PM Thursday

RealFeel Shade™86°

Heat Index86°

WindSW 7 mph

Air QualityPoor

Max UV Index1.6 (Low)

Wind Gusts10 mph

Humidity32%

Indoor Humidity32% (Ideal Humidity)

Dew Point55° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

7 PM

86°
RealFeel® 84°
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%
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Mostly sunny
alerts

Heat Advisory

10:00 AM Tuesday - 8:00 PM Thursday

RealFeel Shade™84°

Heat Index84°

WindSW 6 mph

Air QualityFair

Max UV Index0.6 (Low)

Wind Gusts7 mph

Humidity35%

Indoor Humidity35% (Ideal Humidity)

Dew Point55° F

AccuLumen Brightness Index™3 (Dull)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

8 PM

82°
RealFeel® 80°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
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Mostly clear
alerts

Heat Advisory

10:00 AM Tuesday - 8:00 PM Thursday

Heat Index82°

WindWSW 5 mph

Air QualityFair

Wind Gusts6 mph

Humidity39%

Indoor Humidity39% (Ideal Humidity)

Dew Point55° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

79°
RealFeel® 77°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Mostly clear
alerts

Heat Advisory

10:00 AM Tuesday - 8:00 PM Thursday

WindSW 5 mph

Air QualityFair

Wind Gusts5 mph

Humidity45%

Indoor Humidity45% (Slightly Humid)

Dew Point56° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

10 PM

76°
RealFeel® 74°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Mostly clear
alerts

Heat Advisory

10:00 AM Tuesday - 8:00 PM Thursday

WindSE 5 mph

Air QualityFair

Wind Gusts5 mph

Humidity52%

Indoor Humidity52% (Slightly Humid)

Dew Point57° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

73°
RealFeel® 71°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Mostly clear
alerts

Heat Advisory

10:00 AM Tuesday - 8:00 PM Thursday

WindESE 4 mph

Air QualityFair

Wind Gusts5 mph

Humidity59%

Indoor Humidity59% (Slightly Humid)

Dew Point58° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover26%

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 90° with a RealFeel® of 96°, mostly sunny with a 0% 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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World North America United States California Altadena

Weather Near Altadena:

  • Anaheim, CA
  • Long Beach, CA
  • Los Angeles, CA
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