Castro Valley weather — 10-day forecast
Temperature, rain, wind and feels-like in Castro Valley, hour by hour and over 10 days, with the seasonal normal for context.
Now
Reading from 14:00 · NOAA HRRR model
23 °C
Clear sky
Feels like 22 °C
Next 12 h
- 1423°
- 1524°
- 1623°
- 1722°
- 1820°
- 1918°
- 2016°
- 20:11Sunset
- 2115°14 %
- 2215°14 %
- 2315°
- 0014°
- 0114°
- 0214°
↑ 24°15:00↓ 14°02:00
- Humidity
- 52 %
- Dew point
- 13 °C
- Gusts
- 16.7 km/h
- Clouds
- 9 %
- Pressure
- 1,015 hPa ↓
- UV
- 9 · very high
Grid point 0.9 km away · 3.0 km grid · elevation 43 m
Air quality
The European air-quality index for the city, and the pollutants that set it.
Index set by Ozone
- Ozone
- 86.4µg/m³
- PM2.5
- 13.8µg/m³
- PM10
- 18.2µg/m³
- Nitrogen dioxide
- 3.9µg/m³
- Sulphur dioxide
- 1.3µg/m³
- Carbon monoxide
- 136.0µg/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.
10 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
Mainly clear
24°
15°
Sat
Mainly clear
23°
13°
Sun
Clear sky
26°
14°
Mon
Partly cloudy
22°
13°
Tue
Partly cloudy
22°
13°
Wed
Partly cloudy
21°
14°
Thu
Partly cloudy
20°
15°
Fri
Mainly clear
21°
16°
Sat
Light drizzle1 mm
24°
15°
Sun
Mainly clear
22°
14°
Sun and UV
Sunrise, sunset, day length and ultraviolet intensity.
- Sunrise
- 06:18
- Daylight
- 13 h 53
- Sunset
- 20:11
Radiation · 19.9 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 Castro Valley the mean temperature will be 19.1 °C — -0.2 °C against the normal for 7 August, measured from 1940 to 2026. (1,290 obs.)
Nearby cities
The climate around Castro Valley