Altadena, CA 91001 Weather

Los Angeles County6:16 AM PDT34.19°N, 118.14°W

Current conditions

Partly Sunny
55°
Partly Sunny
Feels like 55°
High 70°·Low 54°
WindE 5 mph
Humidity98%
Dew point54°
Cloud cover58%
UV index0 Low
Sunrise7:05 AM
Sunset6:10 PM

Forecast for this hour (no station report in the last two hours)

Forecast

10-day

  • Friday

    A slight chance of rain showers between 11am and 5pm. Partly sunny, with a high near 70. South southwest wind around 5 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.

  • Friday Night

    Partly cloudy, with a low around 54. Northeast wind around 5 mph.

  • Saturday

    Sunny, with a high near 74. South southeast wind around 5 mph.

National Weather Service forecast updated 8 hrs ago.

Hourly

Hourly forecast
  1. Now Partly Sunny 55°
  2. 7 AM Partly Sunny 55°
  3. 8 AM Partly Sunny 57°
  4. 9 AM Partly Sunny 57°
  5. 10 AM Partly Sunny 57°
  6. 11 AM Slight Chance Rain Showers 60°19%
  7. 12 PM Slight Chance Rain Showers 62°19%
  8. 1 PM Slight Chance Rain Showers 65°19%
  9. 2 PM Slight Chance Rain Showers 65°19%
  10. 3 PM Slight Chance Rain Showers 70°19%
  11. 4 PM Slight Chance Rain Showers 65°19%
  12. 5 PM Mostly Sunny 67°13%
  13. 6 PM Partly Cloudy 67°13%
  14. 7 PM Partly Cloudy 62°13%
  15. 8 PM Partly Cloudy 62°13%
  16. 9 PM Partly Cloudy 59°13%
  17. 10 PM Partly Cloudy 59°13%
  18. 11 PM Mostly Clear 59°
  19. Sat12 AM Mostly Clear 59°
  20. 1 AM Mostly Clear 57°
  21. 2 AM Mostly Clear 57°
  22. 3 AM Mostly Clear 57°
  23. 4 AM Mostly Clear 57°
  24. 5 AM Mostly Clear 54°

10-day forecast

Details
  1. TonightOct 22 Chance Rain Showers Chance Rain Showers35%52°
  2. TodayOct 23 Slight Chance Rain Showers Slight Chance Rain Showers19%54°70°
  3. SatOct 24 Sunny Sunny57°74°
  4. SunOct 25 Sunny Sunny59°77°
  5. MonOct 26 Sunny Sunny60°79°
  6. TueOct 27 Sunny Sunny60°78°
  7. WedOct 28 Mostly Sunny Mostly Sunny59°77°
  8. ThuOct 29 Partly Sunny Partly Sunny72°
  9. FriOct 30 Mostly sunny Mostly sunny56°71°
  10. SatOct 31 Cloudy Cloudy56°68°

Days after the National Weather Service's seven are MET Norway's outlook, a computer model with no forecaster's review.

Radar

Full map
Open the National Weather Service radar (the map here needs JavaScript).

Weather news near Altadena

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Air quality

17
Good
Ozone

Air quality is satisfactory, and air pollution poses little or no risk.

Forecast

  • FriGood (39)

W San Gabriel Vly, CA reporting area · 1 hr ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.

Sun & moon

Sunrise 7:05 AM
Sunset 6:10 PM
Daylight 11 h 4 min (−1 min 59 s tomorrow)
Waxing Gibbous · 92% lit
Moonrise 4:34 PM Moonset 4:26 AM
Full moon Oct 26 New moon Nov 8

Nearby

Forecasters' discussion

From the National Weather Service office in LOX, issued 1 hr ago

Synopsis

23/153 AM.

A relatively quiet Friday will transition into a weak Santa Ana Wind event this weekend, bringing drier conditions and warmer temperatures to the region into next week.

Long Term (mon-thu)

23/153 AM.

A weak Santa Ana event will continue into next week, allowing for warmer (near normal high temps) and drier conditions to prevail. These winds will likely stay confined to the mountains and some valleys struggling to reach advisory levels even in favored spots such as Santa Susana and San Gabriels mtns (30% chance). By Wed or Thurs, onshore flow is likely to return. There are some model solutions indicating a return of wet weather just after Halloween.

Aviation

23/1116Z.

At 0926Z at KLAX, there was no marine layer nor an inversion.

Overall, moderate confidence in 12Z TAF Package. Isolated showers roughly through 23/15Z for KSMX. Mainly VFR CIGs 030-050 with occasional (likely brief) MVFR CIGs 015-030. After 24/00Z, VFR CIGs should scatter out.

KLAX...Moderate confidence in 12Z TAF. SCT-BKN 035-060 with occasional (likely brief) MVFR CIGs 020-030 through 24/00Z. Good confidence that any east wind component remains below 8 kt.

KBUR...Moderate confidence in 12Z TAF. SCT-BKN 035-060 with occasional (likely brief) MVFR CIGs 020-030 through 24/00Z. Slight chance for a light shower this afternoon into early evening - with a very low chance of a lightning strike (5%). No wind issues expected.

Marine

23/153 AM.

For the Outer Waters, high confidence in current forecast. Gusty Small Craft Advisory (SCA) level winds are likely through Friday night. For Saturday through Monday, winds and seas are expected to remain below SCA levels, then there is a 30-40 percent chance of SCA conds near and SW of Point Conception (PZZ673-676) Monday night through Tuesday night.

For the Inner Waters north of Point Sal, moderate to high confidence in current forecast. There is a 20-30% chance of SCA level winds at times through Friday evening. Otherwise, winds and seas should remain below SCA levels through Tuesday night, but with a 30% chance of SCA conds Monday night and Tuesday night.

For the Inner Waters south of Point Conception, moderate confidence in current forecast. Through Tuesday night, high confidence in winds and seas remaining below SCA levels for most areas. The only exceptions will be the western half of the Santa Barbara Channel with a 40-50% chance of SCA level winds late Friday afternoon and evening. As winds shift to northeast, there is a 40% chance of SCA level wind gusts nearshore from Ventura to Santa Monica late Friday night through Saturday morning.

Isolated showers will linger across the coastal waters south of Pt Conception through Friday morning or early afternoon. Very low chance of a lightning strike (5% chance).

Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Search index and reflects what the press published. Terms of use.