Altadena, CA Weather Forecast

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Altadena CA weather  - Clear - 66°F
Clear
66°F
Updated 6:45 am
Feels Like 74°F
Humidity 78%
Wind N 0 mph
Barometer  29.93 in
Dew Point 59°F
Altadena CA weather  - Clear - 19°C
Clear
19°C
Updated 6:45 am
Feels Like 24°C
Humidity 78%
Wind N 0 km/h
Barometer  101.4 kPa
Dew Point 15°C

Altadena Weather Forecast

TODAY TONIGHT SATURDAY SATURDAY NIGHT SUNDAY SUNDAY NIGHT MONDAY MONDAY NIGHT TUESDAY TUESDAY NIGHT WEDNESDAY WEDNESDAY NIGHT
Altadena, CA Weather - Today Sunny Altadena, CA Weather - Tonight Fog Altadena, CA Weather - Saturday Sunny Altadena, CA Weather - Saturday Night Mostly Cloudy Altadena, CA Weather - Sunday Sunny Altadena, CA Weather - Sunday Night Fog Altadena, CA Weather - Monday Sunny Altadena, CA Weather - Monday Night Chance Of Showers Altadena, CA Weather - Tuesday Chance Of Showers Altadena, CA Weather - Tuesday Night Mostly Clear Altadena, CA Weather - Wednesday Sunny Altadena, CA Weather - Wednesday Night Clear
Sunny Fog Sunny Mostly Cloudy Sunny Fog Sunny Chance of Showers Chance of Showers Mostly Clear Sunny Clear
Hi: 90°FHi: 32°C
Lo: 66°FLo: 19°C Hi: 86°FHi: 30°C
Lo: 66°FLo: 19°C Hi: 83°FHi: 28°C
Lo: 63°FLo: 17°C Hi: 80°FHi: 27°C
Lo: 60°FLo: 16°C Hi: 86°FHi: 30°C
Lo: 67°FLo: 19°C Hi: 90°FHi: 32°C
Lo: 67°FLo: 19°C
POP: 20% POP: 20%
POP = Probability of Precipitation.
Weather Outlook Updated: 201 AM PDT Fri Sep 25 2026 Altadena, CA Weather - WeatherWorld.com

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Issued: 515 AM PDT Fri Sep 25 2026

Aviation

...25/1212Z.

Around 12Z at KLAX, the marine layer was 1000 ft deep. The top of the inversion was at 2600 feet with a temperature of 25 C.

High confidence in VFR TAFs for KPRB, KPMD, and KWJF.

Moderate confidence in remainder of TAFs. Timing of flight cat changess may be off by +/- 3 hours. There is a 20% chance of IFR conds at KBUR and KVNY through 17Z Fri. There is a 30% chance of conds at KOXR, KCMA, and KSBA after 08Z Fri, and a 30% Chance of VFR conds Friday night.

KLAX...High confidence...