TODAY NOV05
TEMPERATURE54
HUMIDITY97
PRESSURE102000
WIND COND.
  • 7054Tue
  • 7150Wed
  • 7250Thu
  • 7050Fri
  • 6852Sat
daynightWeather update from San Francisco, San Francisco International Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Millbrae for September is 63.3 degrees
  • The lowest monthly average temperature in Millbrae for January is 50.7 degrees
  • The most monthly precipitation in Millbrae occurs in December with 4.4 inches
  • The air quality index in Millbrae is 2% worse than the national average
  • The pollution index in Millbrae is 254% worse than the national average

Compare Millbrae, CA Weather

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      Millbrae 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"

      Millbrae 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.
      IndexMillbraeCaliforniaNational
      Air quality index435542
      Pollution index9,645,61010,473,1902,726,193

      Millbrae air quality

      MeasurementTotal
      Days measured365
      Days with good air quality252
      Days with moderate air quality101
      Days w/ poor A.Q. for sensitive groups10
      Days with unhealthy air quality2

      Air quality details

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

      Average monthly Millbrae temperature with heat index

      Millbrae monthly precipitation with daily maximum

      Millbrae monthly snow depth with daily maximum

      Millbrae monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      San Leandro, CA90,4894020.0%
      Colma, CA1,4924020.0%
      San Lorenzo, CA30,1174020.0%
      Brisbane, CA4,6454020.0%
      Daly City, CA107,1974020.0%
      Millbrae, CA22,9984314.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Farmington, MN22,996468.0%
      Laguna Beach, CA22,9918978.0%
      Landover, MD22,991476.0%
      Kenmore, WA22,9694510.0%
      Kingston, NY22,9543628.0%
      Millbrae, CA22,9984314.0%
      Source: The Millbrae, 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.