TODAY DEC10
TEMPERATURE54
HUMIDITY79
PRESSURE
WIND COND.98 2
  • 6044Tue
  • 6141Wed
  • 6143Thu
  • 5942Fri
  • 5744Sat
daynightWeather update from LOS ALTOS at

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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.
MonthTemp. (min)Temp. (max)Temp. (avg)Precipitation
January42°F61°F50°F2.4"
February45°F63°F53°F2.4"
March47°F67°F56°F2.0"
April49°F70°F58°F1.3"
May53°F73°F61°F0.3"
June56°F77°F65°F0.2"
July59°F78°F67°F0.0"
August59°F78°F66°F0.0"
September57°F80°F67°F0.1"
October53°F75°F63°F0.7"
November47°F67°F56°F1.3"
December42°F60°F51°F2.6"

Did you know?

  • The highest monthly average temperature in Los Altos for July is 67 degrees.
  • The lowest monthly average temperature in Los Altos for January is 50 degrees.
  • The most monthly precipitation in Los Altos occurs in December with 2.6 inches.
  • The air quality index in Los Altos is 3% better than the national average.
  • The pollution index in Los Altos is 126% worse than the national average.

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Compare Los Altos, CA Weather To Other Cities

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.
IndexLos AltosCaliforniaNational
Air quality index485550
Pollution index11,477,20018,106,7265,066,862

Los Altos air quality information

MeasurementTotal
Days measured365
Days with good air quality204
Days with moderate air quality153
Days w/ poor A.Q. for sensitive groups7
Days with unhealthy air quality1

Los Altos air quality information

PollutantTotal
Arsenic0.070%
Benzene0.110%
Carbon Tetrachloride0.000%
Lead0.160%
Mercury0.090%

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, StatePopulationAir Quality IndexNational Avg.
Lexington Hills, CA2,6173628%
Loma Mar, CA1503628%
Cambrian Park, CA3,259484%
Emerald Lake Hills, CA4,716484%
Highlands-Baywood Park, CA4,261484%
Los Altos, CA30,238484%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Liberty, MO30,2395816%
Sherwood, AR30,251476%
Santa Paula, CA30,283484%
North Royalton, OH30,3025510%
Princeton, NJ30,1684020%
Los Altos, CA30,238484%
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.