Go Back
  • For Business
  • |
  • Warnings
  • Data Suite
  • Forensics
  • Advertising
  • Superior Accuracy™
Nor'easter threat looms as snowstorm heads toward mid-Atlantic. See the snow forecast. Chevron right
California expecting new snowstorm after measuring 90+ inches. Get the forecast. Chevron right

Altadena, CA

46°F
Location Chevron down
Location News Videos
Use Current Location
Recent

Altadena

California

46°
No results found.
Try searching for a city, zip code or point of interest.
Create Your Account Unlock extended daily and hourly forecasts — all with your free account.
Let's Go Chevron right
Have an account already? Log In
settings
Help
Altadena, CA Weather
Today WinterCast Local {stormName} Tracker Hourly Daily Radar MinuteCast® Monthly Air Quality Health & Activities

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps
News

News & Features

Astronomy

Business

Climate

Health

Recreation

Sports

Travel
For Business

Warnings

Data Suite

Forensics

Advertising

Superior Accuracy™

Video

Winter Center

Today

 Hourly Daily Radar MinuteCast® Monthly Air Quality Health & Activities

Tonight's Weather

Fri, Feb 20

Clear to partly cloudy and chilly Lo: 43°

Tomorrow: Mostly sunny Hi: 69°

Current Weather

11:48 PM

46°F
RealFeel® 49°
Clear More Details
Wind NNE 2 mph
Wind Gusts 3 mph
Air Quality Poor

Looking Ahead

Pleasant tomorrow

Altadena Weather Radar

Altadena Weather Radar
Static Radar Temporarily Unavailable
Thank you for your patience as we work to get everything up and running again.
Refresh Page
Clouds
Temperature

Hourly Weather

12 AM 45°
rain drop 0%
1 AM 44°
rain drop 0%
2 AM 43°
rain drop 0%
3 AM 45°
rain drop 0%
4 AM 45°
rain drop 0%
5 AM 45°
rain drop 0%
6 AM 45°
rain drop 0%
7 AM 46°
rain drop 0%
8 AM 49°
rain drop 0%
9 AM 55°
rain drop 0%
10 AM 58°
rain drop 0%
11 AM 61°
rain drop 0%

10-Day Weather Forecast

Tonight

2/20

43° Lo

Mainly clear and chilly

0%

Sat

2/21

69° 52°

Mostly sunny

Night: Mainly clear
0%

Sun

2/22

75° 58°

Mostly sunny and pleasant

Clear
1%

Mon

2/23

77° 56°

Pleasant with some sun

Mostly cloudy
3%

Tue

2/24

77° 58°

Mostly sunny and pleasant

Partly cloudy
7%

Wed

2/25

74° 55°

Partly sunny and pleasant

Partly cloudy
10%

Thu

2/26

75° 54°

Rather cloudy

Partly cloudy
8%

Fri

2/27

80° 55°

Very warm with sun and clouds

Partly cloudy
0%

Sat

2/28

79° 54°

Partly sunny and warm

Partly cloudy
0%

Sun

3/1

75° 52°

Partly sunny

Partly cloudy
1%

Sun & Moon

11 hrs 09 mins
Rise 6:32 AM
Set 5:41 PM
Waxing Crescent
Rise 8:09 AM
Set 9:24 PM

Air Quality

See More
Air Quality Poor

The air has reached a high level of pollution and is unhealthy for sensitive groups. Reduce time spent outside if you are feeling symptoms such as difficulty breathing or throat irritation.

Allergy Outlook

See All
Tree Pollen Low Data is not supported in this location Ragweed Pollen Low Data is not supported in this location Mold High Data is not supported in this location Grass Pollen Low Data is not supported in this location Dust & Dander High Data is not supported in this location

Top Stories

Winter Weather

Nor’easter threat looms as snowstorm set to blanket mid-Atlantic

31 minutes ago

Severe Weather

Likely tornadoes destroy homes, wrap mobile homes around trees

15 hours ago

Winter Weather

California faces a new storm threat, adding to staggering snowfall

42 minutes ago

Weather Forecasts

From 80s F to freezing: Florida faces cold blast, growing fire danger

45 minutes ago

Weather Forecasts

El Nino is brewing: Here’s what it means for US weather in 2026

14 hours ago

 More Stories

Featured Stories

Winter Weather

Search teams working to recover bodies of skiers killed in avalanche

1 day ago

Weather Forecasts

Wildfire season to ramp up early as drought covers over 40% of the US

2 days ago

Weather News

Bald eagle rescued from floating ice on New York's Hudson River

1 day ago

Climate

75% of global coffee supply faces rising extreme heat, analysis says

1 day ago

Travel

The island with an air-conditioned ‘forest’ to cope with summers

1 day ago
World North America United States California Altadena

Weather Near Altadena:

  • Anaheim, CA
  • Long Beach, CA
  • Los Angeles, CA
Company
Proven Superior Accuracy™ About AccuWeather Digital Advertising Careers Press Contact Us
Products & Services
For Business For Partners For Advertising AccuWeather APIs AccuWeather Connect Personal Weather Stations
Apps & Downloads
iPhone App Android App See all Apps & Downloads
Subscription Services
AccuWeather Premium AccuWeather Professional
More
AccuWeather Ready Business Health Hurricane Leisure and Recreation Severe Weather Space and Astronomy Sports Travel Weather News Winter Center
Company
Proven Superior Accuracy™ About AccuWeather Digital Advertising Careers Press Contact Us
Products & Services
For Business For Partners For Advertising AccuWeather APIs AccuWeather Connect Personal Weather Stations
Apps & Downloads
iPhone App Android App See all Apps & Downloads
Subscription Services
AccuWeather Premium AccuWeather Professional
More
AccuWeather Ready Business Health Hurricane Leisure and Recreation Severe Weather Space and Astronomy Sports Travel Weather News Winter Center
© 2026 AccuWeather, Inc. "AccuWeather" and sun design are registered trademarks of AccuWeather, Inc. All Rights Reserved.
Terms of Use | Privacy Policy | Cookie Policy | About Your Privacy Do Not Sell or Share My Personal Information | Data Sources

...

...

...