Castle Hill, CA Weather - Forecast & Monthly Averages

TEMPERATURE	45
HUMIDITY	100
PRESSURE
WIND COND.	236 14.5

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Weather Quick Facts

The highest monthly average temperature in Castle Hill for July is 70.8 degrees
The lowest monthly average temperature in Castle Hill for December is 47.3 degrees
The most monthly precipitation in Castle Hill occurs in January with 3.3 inches
The air quality index in Castle Hill is 5% better than the national average
The pollution index in Castle Hill is 402% worse than the national average

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Castle Hill Average Temperature

In the event that the weather data was unavailable for this city, estimates based upon nearby cities were used.
Month	Temp. _(min)	Temp. _(max)	Temp. _(avg)	Precipitation
January	39°F	58°F	48°F	3.3"
February	43°F	62°F	52°F	3.0"
March	45°F	67°F	54°F	1.8"
April	47°F	71°F	57°F	1.9"
May	52°F	78°F	63°F	0.6"
June	56°F	85°F	68°F	0.0"
July	58°F	90°F	71°F	0.0"
August	57°F	90°F	70°F	0.0"
September	56°F	86°F	68°F	0.0"
October	50°F	77°F	62°F	1.4"
November	45°F	68°F	55°F	1.2"
December	40°F	57°F	47°F	2.3"

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Castle Hill air quality index & pollution index

In the event that the air quality/pollution data was unavailable for this city, estimates based upon nearby cities were used.
Index	Castle Hill	California	National
Air quality index	40	55	42
Pollution index	13,698,500	10,473,190	2,726,193

Castle Hill air quality

Measurement	Total
Days measured	365
Days with good air quality	290
Days with moderate air quality	74
Days w/ poor A.Q. for sensitive groups	1
Days with unhealthy air quality	0

Air quality details

Pollutant	Total
Arsenic	0.040%
Benzene	0.110%
Carbon Tetrachloride	0.330%
Lead	0.070%
Mercury	0.120%

Average monthly Castle Hill temperature with heat index

Castle Hill monthly precipitation with daily maximum

Castle Hill monthly snow depth with daily maximum

Castle Hill monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Alhambra Valley, CA	1,051	40	20.0%
Martinez, CA	38,397	40	20.0%
Pleasant Hill, CA	34,903	40	20.0%
Saranap, CA	6,027	40	20.0%
Blackhawk, CA	10,590	40	20.0%
Castle Hill, CA	1,164	40	20.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Gretna, FL	1,164	40	20.0%
Kings Mills, OH	1,164	54	8.0%
New Columbia, PA	1,164	35	30.0%
Sophia, WV	1,164	295	490.0%
Rodney Village, DE	1,165	42	16.0%
Castle Hill, CA	1,164	40	20.0%

Source: The Castle Hill, CA weather data displayed above is derived from the NOAA (National Oceanic and Atmospheric). Air quality and pollution data is derived from the EPA (United States Environmental Protection Agency). Air quality and pollution levels measured in a particular area may not be representative of the entire county.