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Altadena, CA

70°F
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Altadena

California

70°
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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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4 AM

71°
RealFeel® 69°
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

WindNE 4 mph

Air QualityPoor

Wind Gusts4 mph

Humidity59%

Indoor Humidity59% (Slightly Humid)

Dew Point57° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

5 AM

71°
RealFeel® 69°
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

WindNE 4 mph

Air QualityPoor

Wind Gusts4 mph

Humidity57%

Indoor Humidity57% (Ideal Humidity)

Dew Point55° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

6 AM

70°
RealFeel® 69°
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

WindNE 4 mph

Air QualityPoor

Wind Gusts4 mph

Humidity61%

Indoor Humidity61% (Slightly Humid)

Dew Point56° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

7 AM

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

Heat Advisory

10:00 AM Tuesday - 8:00 PM Thursday

RealFeel Shade™73°

WindE 2 mph

Air QualityPoor

Max UV Index0.6 (Low)

Wind Gusts2 mph

Humidity56%

Indoor Humidity56% (Slightly Humid)

Dew Point56° F

AccuLumen Brightness Index™3 (Dull)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

8 AM

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

Heat Advisory

10:00 AM Tuesday - 8:00 PM Thursday

RealFeel Shade™76°

WindSW 2 mph

Air QualityPoor

Max UV Index1.6 (Low)

Wind Gusts2 mph

Humidity49%

Indoor Humidity49% (Slightly Humid)

Dew Point57° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

9 AM

81°
RealFeel® 85°
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
Mostly sunny
alerts

Heat Advisory

10:00 AM Tuesday - 8:00 PM Thursday

RealFeel Shade™80°

Heat Index81°

WindSW 4 mph

Air QualityPoor

Max UV Index2.8 (Moderate)

Wind Gusts4 mph

Humidity43%

Indoor Humidity43% (Slightly Humid)

Dew Point57° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

10 AM

85°
RealFeel® 90°
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™83°

Heat Index84°

WindSW 5 mph

Air QualityPoor

Max UV Index4.3 (Moderate)

Wind Gusts6 mph

Humidity39%

Indoor Humidity39% (Slightly Humid)

Dew Point58° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

11 AM

88°
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™86°

Heat Index87°

WindSW 6 mph

Air QualityPoor

Max UV Index6.4 (High)

Wind Gusts7 mph

Humidity36%

Indoor Humidity36% (Slightly Humid)

Dew Point58° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

12 PM

91°
RealFeel® 98°
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™89°

Heat Index90°

WindSSW 6 mph

Air QualityPoor

Max UV Index8.8 (Very High)

Wind Gusts9 mph

Humidity32%

Indoor Humidity32% (Slightly Humid)

Dew Point58° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

1 PM

94°
RealFeel® 101°
Very Hot
RealFeel Guide
Very Hot
101° to 107°
Caution advised. 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™91°

Heat Index93°

WindSSW 7 mph

Air QualityPoor

Max UV Index9.8 (Very High)

Wind Gusts10 mph

Humidity29%

Indoor Humidity29% (Slightly Humid)

Dew Point57° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

2 PM

96°
RealFeel® 101°
Very Hot
RealFeel Guide
Very Hot
101° to 107°
Caution advised. 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™93°

Heat Index94°

WindSSW 7 mph

Air QualityPoor

Max UV Index8.8 (Very High)

Wind Gusts13 mph

Humidity27%

Indoor Humidity27% (Slightly Humid)

Dew Point57° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

3 PM

97°
RealFeel® 101°
Very Hot
RealFeel Guide
Very Hot
101° to 107°
Caution advised. 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™94°

Heat Index95°

WindSW 8 mph

Air QualityPoor

Max UV Index6.4 (High)

Wind Gusts13 mph

Humidity26%

Indoor Humidity26% (Slightly Humid)

Dew Point56° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

4 PM

95°
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%
Chevron down
Mostly sunny
alerts

Heat Advisory

10:00 AM Tuesday - 8:00 PM Thursday

RealFeel Shade™93°

Heat Index94°

WindSW 8 mph

Air QualityPoor

Max UV Index4.3 (Moderate)

Wind Gusts12 mph

Humidity27%

Indoor Humidity27% (Slightly Humid)

Dew Point56° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

5 PM

94°
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™91°

Heat Index92°

WindSW 7 mph

Air QualityPoor

Max UV Index2.8 (Moderate)

Wind Gusts12 mph

Humidity28%

Indoor Humidity28% (Slightly Humid)

Dew Point56° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

6 PM

92°
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™89°

Heat Index90°

WindSSW 7 mph

Air QualityPoor

Max UV Index1.6 (Low)

Wind Gusts8 mph

Humidity30%

Indoor Humidity30% (Slightly Humid)

Dew Point56° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

7 PM

88°
RealFeel® 87°
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
Mostly sunny
alerts

Heat Advisory

10:00 AM Tuesday - 8:00 PM Thursday

RealFeel Shade™87°

Heat Index87°

WindSSW 6 mph

Air QualityPoor

Max UV Index0.6 (Low)

Wind Gusts7 mph

Humidity35%

Indoor Humidity35% (Slightly Humid)

Dew Point57° F

AccuLumen Brightness Index™3 (Dull)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

8 PM

85°
RealFeel® 83°
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
Mostly clear
alerts

Heat Advisory

10:00 AM Tuesday - 8:00 PM Thursday

Heat Index84°

WindSSW 5 mph

Air QualityPoor

Wind Gusts6 mph

Humidity41%

Indoor Humidity41% (Slightly Humid)

Dew Point59° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

82°
RealFeel® 80°
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

Heat Index82°

WindS 5 mph

Air QualityPoor

Wind Gusts6 mph

Humidity47%

Indoor Humidity47% (Slightly Humid)

Dew Point60° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

10 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

WindSSE 5 mph

Air QualityPoor

Wind Gusts5 mph

Humidity53%

Indoor Humidity53% (Slightly Humid)

Dew Point60° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

76°
RealFeel® 75°
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

WindSSE 4 mph

Air QualityPoor

Wind Gusts5 mph

Humidity58%

Indoor Humidity58% (Slightly Humid)

Dew Point60° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover11%

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 71° with a RealFeel® of 69°, mostly clear 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:

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