Altadena weather — 10-day forecast
Temperature, rain, wind and feels-like in Altadena, hour by hour and over 10 days, with the seasonal normal for context.
Now
Reading from 12:00 · NOAA HRRR model
30 °C
Clear sky
Next 12 h
- 1230°
- 1333°
- 1434°
- 1534°
- 1633°
- 1732°
- 1831°
- 1928°
- 19:48Sunset
- 2026°
- 2124°
- 2223°
- 2322°
- 0021°
↑ 34°14:00↓ 21°00:00
- Humidity
- 36 %
- Dew point
- 13 °C
- Gusts
- 10.3 km/h
- Clouds
- 0 %
- Pressure
- 1,014 hPa
- UV
- 10 · very high
Grid point 1.0 km away · 3.0 km grid · elevation 422 m
Air quality
The European air-quality index for the city, and the pollutants that set it.
Index set by PM2.5
- PM2.5
- 23.1µg/m³▲
- PM10
- 29.4µg/m³
- Ozone
- 81.6µg/m³
- Nitrogen dioxide
- 15.9µg/m³
- Sulphur dioxide
- 4.8µg/m³
- Carbon monoxide
- 178.0µg/m³
- Dust (AOD)
- 0.01
Generated using Copernicus Atmosphere Monitoring Service information
Hour by hour
Step-by-step detail: temperature, wind, cloud cover and ultraviolet.
9 days
Each day's extremes and the chance of rain, out to the end of the run.
Rain probability (> 1 mm): 50 ECMWF ensemble members.
Today
Clear sky
34°
19°
Sat
Clear sky
34°
17°
Sun
Clear sky
35°
18°
Mon
Mainly clear
33°
22°
Tue
Overcast
29°
22°
Wed
Light drizzle1 mm
28°
19°
Thu
Partly cloudy
26°
18°
Fri
Clear sky
25°
18°
Sat
Clear sky
29°
18°
Sun and UV
Sunrise, sunset, day length and ultraviolet intensity.
- Sunrise
- 06:09
- Daylight
- 13 h 39
- Sunset
- 19:48
Radiation · 27.7 MJ/m²
Sea state
Sea state at the marine grid point closest to the city.
Significant height: the mean of the highest third of waves. Individual waves reach about twice it.
Data: ECMWF
Today in Altadena the mean temperature will be 26.7 °C — +2.5 °C against the normal for 7 August, measured from 1940 to 2026. (1,290 obs.)
Nearby cities
The climate around Altadena