TODAY OCT16
TEMPERATURE54
HUMIDITY45
PRESSURE30.09
WIND COND.200 6.9
  • 6850Tue
  • 6851Wed
  • 6851Thu
  • 7052Fri
  • 7052Sat
daynightWeather update from San Francisco, San Francisco International Airport at
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San Bruno 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
January44°F58°F51°F3.2"
February46°F62°F53°F3.4"
March47°F64°F54°F2.7"
April49°F67°F56°F1.7"
May51°F69°F58°F0.3"
June54°F72°F61°F0.2"
July56°F73°F62°F0.0"
August56°F73°F62°F0.0"
September56°F76°F63°F0.1"
October54°F73°F62°F1.0"
November49°F65°F56°F1.7"
December44°F58°F51°F4.4"

Did you know?

  • The highest monthly average temperature in San Bruno for September is 63 degrees.
  • The lowest monthly average temperature in San Bruno for January is 51 degrees.
  • The most monthly precipitation in San Bruno occurs in December with 4.4 inches.
  • The air quality index in San Bruno is 6% worse than the national average.
  • The pollution index in San Bruno is 90% worse than the national average.

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San Bruno 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.
IndexSan BrunoCaliforniaNational
Air quality index535550
Pollution index9,645,61018,106,7265,066,862

San Bruno air quality information

MeasurementTotal
Days measured365
Days with good air quality162
Days with moderate air quality196
Days w/ poor A.Q. for sensitive groups7
Days with unhealthy air quality

San Bruno air quality information

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

Average monthly San Bruno temperature with heat index

San Bruno monthly precipitation with daily maximum

San Bruno monthly snow depth with daily maximum

San Bruno monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Alameda, CA77,4094314%
Oakland, CA412,0404314%
South San Francisco, CA66,5874314%
San Francisco, CA850,2824314%
Colma, CA1,5404314%
San Bruno, CA42,736536%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Belleville, IL42,7296020%
Salem, MA42,804476%
Moline, IL42,8055510%
Bell Gardens, CA42,8057448%
Fairfield, OH42,640548%
San Bruno, CA42,736536%
Source: The San Bruno, 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.