San Leandro, CA Weather - Forecast & Monthly Averages

TEMPERATURE	63
HUMIDITY	56
PRESSURE	101760
WIND COND.

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Weather Quick Facts

The highest monthly average temperature in San Leandro for September is 63.6 degrees
The lowest monthly average temperature in San Leandro for January is 49.6 degrees
The most monthly precipitation in San Leandro occurs in December with 4.1 inches
The air quality index in San Leandro is 5% better than the national average
The pollution index in San Leandro is 136% worse than the national average

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San Leandro 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	41°F	59°F	50°F	2.8"
February	45°F	62°F	53°F	3.1"
March	47°F	65°F	55°F	2.9"
April	49°F	67°F	57°F	1.8"
May	52°F	69°F	59°F	0.4"
June	54°F	72°F	62°F	0.3"
July	56°F	73°F	63°F	0.0"
August	57°F	73°F	63°F	0.0"
September	55°F	76°F	64°F	0.1"
October	52°F	73°F	61°F	1.0"
November	47°F	65°F	56°F	1.9"
December	42°F	59°F	50°F	4.1"

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San Leandro 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	San Leandro	California	National
Air quality index	40	55	42
Pollution index	6,427,290	10,473,190	2,726,193

San Leandro 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	0.010%
Benzene	0.110%
Carbon Tetrachloride	0.010%
Lead	0.010%
Mercury	0.003%

Average monthly San Leandro temperature with heat index

San Leandro monthly precipitation with daily maximum

San Leandro monthly snow depth with daily maximum

San Leandro monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Piedmont, CA	11,454	40	20.0%
El Cerrito, CA	25,280	40	20.0%
Alamo, CA	13,864	40	20.0%
Orinda, CA	19,461	40	20.0%
Shell Ridge, CA	1,081	40	20.0%
San Leandro, CA	90,489	40	20.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Bellingham, WA	90,821	34	32.0%
Westminster, CA	90,857	72	44.0%
Toms River, NJ	90,081	41	18.0%
Santa Barbara, CA	90,911	44	12.0%
Indio, CA	89,996	89	78.0%
San Leandro, CA	90,489	40	20.0%

Source: The San Leandro, 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.