Los Altos, CA Weather - Forecast & Monthly Averages

TEMPERATURE	55
HUMIDITY	96
PRESSURE
WIND COND.	1 1.6

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Weather Quick Facts

The highest monthly average temperature in Los Altos for July is 66.7 degrees
The lowest monthly average temperature in Los Altos for January is 50.4 degrees
The most monthly precipitation in Los Altos occurs in December with 2.6 inches
The air quality index in Los Altos is 2% worse than the national average
The pollution index in Los Altos is 321% worse than the national average

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Los Altos 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	42°F	61°F	50°F	2.4"
February	45°F	63°F	53°F	2.4"
March	47°F	67°F	56°F	2.0"
April	49°F	70°F	58°F	1.3"
May	53°F	73°F	61°F	0.3"
June	56°F	77°F	65°F	0.2"
July	59°F	78°F	67°F	0.0"
August	59°F	78°F	66°F	0.0"
September	57°F	80°F	67°F	0.1"
October	53°F	75°F	63°F	0.7"
November	47°F	67°F	56°F	1.3"
December	42°F	60°F	51°F	2.6"

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Los Altos 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	Los Altos	California	National
Air quality index	43	55	42
Pollution index	11,477,200	10,473,190	2,726,193

Los Altos air quality

Measurement	Total
Days measured	365
Days with good air quality	263
Days with moderate air quality	98
Days w/ poor A.Q. for sensitive groups	4
Days with unhealthy air quality	0

Air quality details

Pollutant	Total
Arsenic	0.070%
Benzene	0.110%
Carbon Tetrachloride	0.000%
Lead	0.160%
Mercury	0.090%

Average monthly Los Altos temperature with heat index

Los Altos monthly precipitation with daily maximum

Los Altos monthly snow depth with daily maximum

Los Altos monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Loma Mar, CA	282	35	30.0%
Lexington Hills, CA	2,656	35	30.0%
Newark, CA	48,148	43	14.0%
Sunnyvale, CA	152,569	43	14.0%
Foster City, CA	33,056	43	14.0%
Los Altos, CA	30,878	43	14.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Fair Oaks, CA	30,882	52	4.0%
Sterling, VA	30,872	47	6.0%
Centre Wellington, ON	30,896	n/a
Algonquin, IL	30,848	42	16.0%
Cleburne, TX	30,812	33	34.0%
Los Altos, CA	30,878	43	14.0%

Source: The Los Altos, 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.