Castro Valley, CA Weather

15:55 Thursday

Scattered clouds

27° Feels like 27°

West 12 - 34 km/h

Hourly Cloudy intervals for the next few hours

Today 21 Aug. 30° / 13° 12 - 35 km/h
Tomorrow 22 Aug. 24° / 12° 10 - 32 km/h
Saturday 23 Aug. 22° / 13° 14 - 38 km/h
Sunday 24 Aug. 21° / 13° 15 - 40 km/h
Monday 25 Aug. 22° / 13° 12 - 38 km/h
Tuesday 26 Aug. 25° / 13° 13 - 37 km/h
Wednesday 27 Aug. 24° / 14° 12 - 38 km/h

Weather Forecast for Castro Valley, CA Today

, 21 August

Tomorrow

, 22 August

16:00		27°	Scattered clouds Feels Like 27°	West 12 - 34 km/h	4 Moderate SPF: 6-10
	Rain 0% 0 mm Humidity 41% Dew Point 13 °C Clouds 17% Feels Like 27 °C Visibility 40 km Wind - Average 12 km/h Pressure 1011 hPa Fog No Wind - Gusts 34 km/h Snowline 17060 ft
17:00		26°	Scattered clouds Feels Like 26°	West 11 - 34 km/h	2 Low SPF: no
	Rain 0% 0 mm Humidity 46% Dew Point 13 °C Clouds 21% Feels Like 26 °C Visibility 40 km Wind - Average 11 km/h Pressure 1011 hPa Fog No Wind - Gusts 34 km/h Snowline 17060 ft
18:00		23°	Scattered clouds Feels Like 25°	West 10 - 30 km/h	1 Low SPF: no
	Rain 0% 0 mm Humidity 54% Dew Point 13 °C Clouds 19% Feels Like 25 °C Visibility 40 km Wind - Average 10 km/h Pressure 1011 hPa Fog No Wind - Gusts 30 km/h Snowline 17060 ft
19:00		20°	Sunny Feels Like 20°	Southwest 8 - 27 km/h	0 Low SPF: no
	Rain 0% 0 mm Humidity 64% Dew Point 13 °C Clouds 6% Feels Like 20 °C Visibility 40 km Wind - Average 8 km/h Pressure 1011 hPa Fog No Wind - Gusts 27 km/h Snowline 17060 ft
20:00		18°	Sunny Feels Like 18°	Southwest 6 - 30 km/h	0 Low SPF: no
	Rain 0% 0 mm Humidity 72% Dew Point 13 °C Clouds 5% Feels Like 18 °C Visibility 35 km Wind - Average 6 km/h Pressure 1012 hPa Fog No Wind - Gusts 30 km/h Snowline 17388 ft
21:00		17°	Clear Feels Like 17°	South 5 - 15 km/h	0 Low SPF: no
	Rain 0% 0 mm Humidity 76% Dew Point 13 °C Clouds 0% Feels Like 17 °C Visibility 35 km Wind - Average 5 km/h Pressure 1012 hPa Fog No Wind - Gusts 15 km/h Snowline 17388 ft
22:00		17°	Clear Feels Like 17°	South 5 - 12 km/h	0 Low SPF: no
	Rain 0% 0 mm Humidity 79% Dew Point 13 °C Clouds 2% Feels Like 17 °C Visibility 35 km Wind - Average 5 km/h Pressure 1012 hPa Fog No Wind - Gusts 12 km/h Snowline 17388 ft
23:00		16°	Clear Feels Like 16°	South 4 - 14 km/h	0 Low SPF: no
	Rain 0% 0 mm Humidity 82% Dew Point 13 °C Clouds 7% Feels Like 16 °C Visibility 35 km Wind - Average 4 km/h Pressure 1012 hPa Fog No Wind - Gusts 14 km/h Snowline 17388 ft
24:00		15°	Scattered clouds Feels Like 15°	South 4 - 9 km/h	0 Low SPF: no
	Rain 0% 0 mm Humidity 85% Dew Point 13 °C Clouds 21% Feels Like 15 °C Visibility 35 km Wind - Average 4 km/h Pressure 1012 hPa Fog No Wind - Gusts 9 km/h Snowline 17388 ft

Weather:
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Photoprotection (SPF):
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Sunrise and Sunset

Sunrise 06:29 Sunset 19:52

First light 06:02 Midday 13:11 Last light 20:19

Day length 13h 23m

Remaining daylight 4h 24m

Lunar calendar

Mon	Tue	Wed	Thu	Fri	Sat	Sun
			21	22	23	24
25	26	27	28	29	30	31
1	2	3

Air quality in Castro Valley today

Detail

42

Moderate O₃ (104 µg/m³)

Possible health risk.
Enjoy your usual outdoor activities if you do not experience symptoms.
Sensitive people should limit prolonged or intense outdoor activities.

Weather graphs

Maximum Minimum Rainfall