South San Francisco, CA Weather - Forecast & Monthly Averages

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TEMPERATURE	54
HUMIDITY	88
PRESSURE	101693.25
WIND COND.

Weather Quick Facts

The highest monthly average temperature in South San Francisco for September is 63.3 degrees
The lowest monthly average temperature in South San Francisco for January is 50.7 degrees
The most monthly precipitation in South San Francisco occurs in December with 4.4 inches
The air quality index in South San Francisco is 5% better than the national average
The pollution index in South San Francisco is 254% worse than the national average

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South San Francisco 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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South San Francisco 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	South San Francisco	California	National
Air quality index	40	55	42
Pollution index	9,645,610	10,473,190	2,726,193

South San Francisco 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	0.140%
Benzene	0.070%
Carbon Tetrachloride	0.000%
Lead	0.100%
Mercury	0.020%

Average monthly South San Francisco temperature with heat index

South San Francisco monthly precipitation with daily maximum

South San Francisco monthly snow depth with daily maximum

South San Francisco monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Moraga, CA	16,896	40	20.0%
Colma, CA	1,492	40	20.0%
Emeryville, CA	11,679	40	20.0%
Oakland, CA	422,575	40	20.0%
Marin City, CA	3,040	40	20.0%
South San Francisco, CA	66,878	40	20.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Johnson City, TN	66,934	45	10.0%
Victoria, TX	66,974	31	38.0%
Conway, AR	66,776	45	10.0%
Lehi, UT	66,980	46	8.0%
Kenner, LA	66,759	45	10.0%
South San Francisco, CA	66,878	40	20.0%

Source: The South San Francisco, 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.