Pacifica, CA Weather - Forecast & Monthly Averages

TEMPERATURE	55
HUMIDITY	88
PRESSURE	101250
WIND COND.	170 20.5

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Weather Quick Facts

The highest monthly average temperature in Pacifica for September is 63.3 degrees
The lowest monthly average temperature in Pacifica for January is 50.7 degrees
The most monthly precipitation in Pacifica occurs in December with 4.4 inches
The air quality index in Pacifica is 2% worse than the national average
The pollution index in Pacifica is 254% worse than the national average

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Pacifica 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	44°F	58°F	51°F	3.2"
February	46°F	62°F	53°F	3.4"
March	47°F	64°F	54°F	2.7"
April	49°F	67°F	56°F	1.7"
May	51°F	69°F	58°F	0.3"
June	54°F	72°F	61°F	0.2"
July	56°F	73°F	62°F	0.0"
August	56°F	73°F	62°F	0.0"
September	56°F	76°F	63°F	0.1"
October	54°F	73°F	62°F	1.0"
November	49°F	65°F	56°F	1.7"
December	44°F	58°F	51°F	4.4"

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Pacifica 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	Pacifica	California	National
Air quality index	43	55	42
Pollution index	9,645,610	10,473,190	2,726,193

Pacifica air quality information

Measurement	Total
Days measured	365
Days with good air quality	252
Days with moderate air quality	101
Days w/ poor A.Q. for sensitive groups	10
Days with unhealthy air quality	2

Pacifica air quality information

Pollutant	Total
Arsenic	0.140%
Benzene	0.070%
Carbon Tetrachloride	0.000%
Lead	0.100%
Mercury	0.020%

Average monthly Pacifica temperature with heat index

Pacifica monthly precipitation with daily maximum

Pacifica monthly snow depth with daily maximum

Pacifica monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Brisbane, CA	4,645	40	20.0%
Daly City, CA	107,197	40	20.0%
South San Francisco, CA	66,878	40	20.0%
Alameda, CA	79,827	40	20.0%
Oakland, CA	422,575	40	20.0%
Pacifica, CA	38,663	43	14.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Security-Widefield, CO	38,645	45	10.0%
Wheeling, IL	38,684	55	10.0%
Wausau, WI	38,685	34	32.0%
Mission Bend, TX	38,693	52	4.0%
Hot Springs, AR	38,697	38	24.0%
Pacifica, CA	38,663	43	14.0%

Source: The Pacifica, 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.