Webster, San Diego, CA Weather - Forecast & Monthly Averages

TEMPERATURE	65
HUMIDITY	64
PRESSURE	101530
WIND COND.	351 8.1

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Weather Quick Facts

The highest monthly average temperature in Webster for August is 71.1 degrees
The lowest monthly average temperature in Webster for December is 57.5 degrees
The most monthly precipitation in Webster occurs in December with 2.2 inches
The air quality index in Webster is 52% worse than the national average
The pollution index in Webster is 1581% worse than the national average

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Webster 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	49°F	68°F	58°F	1.7"
February	51°F	68°F	59°F	1.8"
March	54°F	69°F	60°F	1.0"
April	56°F	70°F	62°F	0.6"
May	60°F	70°F	64°F	0.4"
June	62°F	72°F	66°F	0.0"
July	66°F	76°F	70°F	0.2"
August	67°F	78°F	71°F	0.0"
September	66°F	78°F	71°F	0.2"
October	61°F	77°F	68°F	0.5"
November	55°F	73°F	63°F	0.9"
December	49°F	67°F	58°F	2.2"

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Webster 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	Webster	San Diego	California
Air quality index	64	64	55
Pollution index	45,820,500	45,820,500	10,473,190

Webster air quality

Measurement	Total
Days measured	365
Days with good air quality	87
Days with moderate air quality	253
Days w/ poor A.Q. for sensitive groups	23
Days with unhealthy air quality	2

Air quality details

Pollutant	Total
Arsenic	1.130%
Benzene	0.410%
Carbon Tetrachloride	0.030%
Lead	0.600%
Mercury	0.080%

Average monthly Webster temperature with heat index

Webster monthly precipitation with daily maximum

Webster monthly snow depth with daily maximum

Webster monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Imperial Beach, CA	27,334	64	28.0%
National City, CA	61,342	64	28.0%
Casa de Oro-Mount Helix, CA	19,327	64	28.0%
Granite Hills, CA	4,020	64	28.0%
Rancho San Diego, CA	21,476	64	28.0%
San Diego, CA	1,414,545	64	28.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Calgary, AB	1,371,990	n/a
Dallas, TX	1,338,846	51	2.0%
San Antonio, TX	1,529,133	49	2.0%
Philadelphia, PA	1,581,531	51	2.0%
Phoenix, AZ	1,658,422	74	48.0%
San Diego, CA	1,414,545	64	28.0%

Source: The Webster, San Diego, 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.