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Altadena, CA

88°F
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Altadena

California

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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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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%
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Sunny
alerts

Extreme Heat Warning

10:00 AM Friday - 8:00 PM Sunday
alerts

Heat Advisory

10:00 AM Thursday - 8:00 PM Sunday
alerts

Air Quality Alert

4:02 PM Thursday - 8:00 PM Sunday

RealFeel Shade™88°

Heat Index89°

WindSSW 6 mph

Air QualityFair

Max UV Index9.9 (Very High)

Wind Gusts9 mph

Humidity32%

Indoor Humidity32% (Slightly Humid)

Dew Point57° F

AccuLumen Brightness Index™10 (Very Bright)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

1 PM

93°
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
Sunny
alerts

Extreme Heat Warning

10:00 AM Friday - 8:00 PM Sunday
alerts

Heat Advisory

10:00 AM Thursday - 8:00 PM Sunday
alerts

Air Quality Alert

4:02 PM Thursday - 8:00 PM Sunday

RealFeel Shade™90°

Heat Index91°

WindSSW 7 mph

Air QualityFair

Max UV Index11.2 (Extreme)

Wind Gusts12 mph

Humidity29%

Indoor Humidity29% (Slightly Humid)

Dew Point56° F

AccuLumen Brightness Index™10 (Very Bright)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

2 PM

95°
RealFeel® 102°
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
Sunny
alerts

Extreme Heat Warning

10:00 AM Friday - 8:00 PM Sunday
alerts

Heat Advisory

10:00 AM Thursday - 8:00 PM Sunday
alerts

Air Quality Alert

4:02 PM Thursday - 8:00 PM Sunday

RealFeel Shade™92°

Heat Index94°

WindSSW 7 mph

Air QualityFair

Max UV Index9.9 (Very High)

Wind Gusts13 mph

Humidity27%

Indoor Humidity27% (Slightly Humid)

Dew Point56° F

AccuLumen Brightness Index™10 (Very Bright)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

3 PM

97°
RealFeel® 102°
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
Sunny
alerts

Extreme Heat Warning

10:00 AM Friday - 8:00 PM Sunday
alerts

Heat Advisory

10:00 AM Thursday - 8:00 PM Sunday
alerts

Air Quality Alert

4:02 PM Thursday - 8:00 PM Sunday

RealFeel Shade™94°

Heat Index96°

WindSSW 7 mph

Air QualityFair

Max UV Index7.3 (High)

Wind Gusts13 mph

Humidity25%

Indoor Humidity25% (Slightly Humid)

Dew Point57° F

AccuLumen Brightness Index™10 (Very Bright)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

4 PM

96°
RealFeel® 99°
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
Sunny
alerts

Extreme Heat Warning

10:00 AM Friday - 8:00 PM Sunday
alerts

Heat Advisory

10:00 AM Thursday - 8:00 PM Sunday
alerts

Air Quality Alert

4:02 PM Thursday - 8:00 PM Sunday

RealFeel Shade™93°

Heat Index95°

WindSW 8 mph

Air QualityFair

Max UV Index4.7 (Moderate)

Wind Gusts13 mph

Humidity26%

Indoor Humidity26% (Slightly Humid)

Dew Point57° F

AccuLumen Brightness Index™10 (Very Bright)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

5 PM

95°
RealFeel® 95°
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
Sunny
alerts

Extreme Heat Warning

10:00 AM Friday - 8:00 PM Sunday
alerts

Heat Advisory

10:00 AM Thursday - 8:00 PM Sunday
alerts

Air Quality Alert

4:02 PM Thursday - 8:00 PM Sunday

RealFeel Shade™92°

Heat Index93°

WindSW 8 mph

Air QualityFair

Max UV Index3.1 (Moderate)

Wind Gusts13 mph

Humidity28%

Indoor Humidity28% (Slightly Humid)

Dew Point57° F

AccuLumen Brightness Index™10 (Very Bright)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

6 PM

93°
RealFeel® 93°
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
Sunny
alerts

Extreme Heat Warning

10:00 AM Friday - 8:00 PM Sunday
alerts

Heat Advisory

10:00 AM Thursday - 8:00 PM Sunday
alerts

Air Quality Alert

4:02 PM Thursday - 8:00 PM Sunday

RealFeel Shade™90°

Heat Index91°

WindSW 7 mph

Air QualityFair

Max UV Index1.9 (Low)

Wind Gusts10 mph

Humidity29%

Indoor Humidity29% (Slightly Humid)

Dew Point57° F

AccuLumen Brightness Index™10 (Very Bright)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

7 PM

91°
RealFeel® 89°
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
alerts

Extreme Heat Warning

10:00 AM Friday - 8:00 PM Sunday
alerts

Heat Advisory

10:00 AM Thursday - 8:00 PM Sunday
alerts

Air Quality Alert

4:02 PM Thursday - 8:00 PM Sunday

RealFeel Shade™89°

Heat Index89°

WindSW 7 mph

Air QualityFair

Max UV Index0.8 (Low)

Wind Gusts7 mph

Humidity32%

Indoor Humidity32% (Slightly Humid)

Dew Point57° F

AccuLumen Brightness Index™5 (Medium)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

8 PM

87°
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%
Chevron down
Clear
alerts

Extreme Heat Warning

10:00 AM Friday - 8:00 PM Sunday
alerts

Heat Advisory

10:00 AM Thursday - 8:00 PM Sunday
alerts

Air Quality Alert

4:02 PM Thursday - 8:00 PM Sunday

Heat Index86°

WindSW 6 mph

Air QualityFair

Wind Gusts6 mph

Humidity37%

Indoor Humidity37% (Slightly Humid)

Dew Point58° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

83°
RealFeel® 81°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Clear
alerts

Extreme Heat Warning

10:00 AM Friday - 8:00 PM Sunday
alerts

Heat Advisory

10:00 AM Thursday - 8:00 PM Sunday
alerts

Air Quality Alert

4:02 PM Thursday - 8:00 PM Sunday

Heat Index83°

WindSW 5 mph

Air QualityFair

Wind Gusts6 mph

Humidity43%

Indoor Humidity43% (Slightly Humid)

Dew Point59° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover0%

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
Clear
alerts

Extreme Heat Warning

10:00 AM Friday - 8:00 PM Sunday
alerts

Heat Advisory

10:00 AM Thursday - 8:00 PM Sunday
alerts

Air Quality Alert

4:02 PM Thursday - 8:00 PM Sunday

WindSW 5 mph

Air QualityFair

Wind Gusts5 mph

Humidity50%

Indoor Humidity50% (Slightly Humid)

Dew Point59° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

75°
RealFeel® 73°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Clear
alerts

Extreme Heat Warning

10:00 AM Friday - 8:00 PM Sunday
alerts

Heat Advisory

10:00 AM Thursday - 8:00 PM Sunday
alerts

Air Quality Alert

4:02 PM Thursday - 8:00 PM Sunday

WindSSW 4 mph

Air QualityFair

Wind Gusts5 mph

Humidity56%

Indoor Humidity56% (Slightly Humid)

Dew Point59° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover0%

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 91° with a RealFeel® of 98°, 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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Weather Near Altadena:

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  • Long Beach, CA
  • Los Angeles, CA
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