TODAY MAY20
TEMPERATURE55
HUMIDITY72
PRESSURE29.97
WIND COND.270 17.2
  • 6150Sun
  • 6551Mon
  • 6551Tue
  • 6551Wed
  • 6651Thu
daynightWeather update from San Francisco, San Francisco International Airport at

Western Hills Average Weather

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
January30°F72°F52°Fn/a
February36°F75°F55°Fn/a
March37°F82°F58°Fn/a
April41°F93°F60°Fn/a
May48°F100°F65°Fn/a
June52°F102°F68°Fn/a
July55°F108°F70°Fn/a
August54°F100°F70°Fn/a
September50°F99°F68°Fn/a
October46°F84°F64°Fn/a
November39°F81°F59°Fn/a
December32°F72°F52°Fn/a

Did you know?

  • The highest monthly average temperature in Western Hills for July is 70 degrees.
  • The lowest monthly average temperature in Western Hills for January is 52 degrees.
  • The most monthly precipitation in Western Hills occurs in January with 0 inches.
  • The air quality index in Western Hills is 3% better than the national average.
  • The pollution index in Western Hills is 90% worse than the national average.

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Compare San Mateo, CA Weather To Other Cities

Western Hills 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.
IndexWestern HillsSan MateoCalifornia
Air quality index484855
Pollution index9,645,6109,645,61018,106,726

Western Hills 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

Western Hills air quality information

PollutantTotal
Arsenic0.140%
Benzene0.070%
Carbon Tetrachloride0.000%
Lead0.100%
Mercury0.020%

Average monthly Western Hills temperature with heat index

Western Hills monthly precipitation with daily maximum

Western Hills monthly snow depth with daily maximum

Western Hills monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Alameda, CA77,4094314%
Brisbane, CA4,5684314%
Colma, CA1,5404314%
San Leandro, CA89,0394314%
Ashland, CA24,2884314%
San Mateo, CA102,224484%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Sandy Springs, GA102,212524%
Clovis, CA102,1488060%
Davenport, IA102,3055510%
Lewisville, TX102,327548%
Rialto, CA102,4188570%
San Mateo, CA102,224484%
Source: The Western Hills, San Mateo, 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.