TODAY MAR29
TEMPERATURE
HUMIDITY
PRESSURE
WIND COND.
  • 5648100%100%
  • 5947Sat70%
  • 6148Sun
  • 6650Mon
  • 6651Tue
daynightWeather update from SAN FRANCISCO DOWNTOWN at
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Weather Quick Facts

  • The highest monthly average temperature in Excelsior for September is 63.3 degrees
  • The lowest monthly average temperature in Excelsior for January is 50.7 degrees
  • The most monthly precipitation in Excelsior occurs in December with 4.4 inches
  • The air quality index in Excelsior is 5% better than the national average
  • The pollution index in Excelsior is 202% worse than the national average

Compare San Francisco, CA Weather

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      Excelsior 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"

      Excelsior 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.
      IndexExcelsiorSan FranciscoCalifornia
      Air quality index404055
      Pollution index8,232,3608,232,36010,473,190

      Excelsior air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality290
      Days with moderate air quality74
      Days w/ poor A.Q. for sensitive groups1
      Days with unhealthy air quality0

      Excelsior air quality information

      PollutantTotal
      Arsenic0.010%
      Benzene0.060%
      Carbon Tetrachloride0.000%
      Lead0.010%
      Mercury0.010%

      Average monthly Excelsior temperature with heat index

      Excelsior monthly precipitation with daily maximum

      Excelsior monthly snow depth with daily maximum

      Excelsior monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Alameda, CA79,8274020.0%
      Emeryville, CA11,6794020.0%
      South San Francisco, CA66,8784020.0%
      Kentfield, CA7,4234020.0%
      Muir Beach, CA3604020.0%
      San Francisco, CA874,7844020.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Charlotte, NC873,570492.0%
      Indianapolis, IN869,387548.0%
      Columbus, OH889,079468.0%
      Fort Worth, TX892,221512.0%
      Jacksonville, FL902,4884314.0%
      San Francisco, CA874,7844020.0%
      Source: The Excelsior, San Francisco, 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.