Current weather conditions temporarily unavailable!

Key findings

  • The highest monthly average temperature in Excelsior for September is 63 degrees
  • The lowest monthly average temperature in Excelsior for January is 51 degrees
  • The most monthly precipitation in Excelsior occurs in December with 4.4 inches
  • The air quality index in Excelsior is 20% better than the national average
  • The pollution index in Excelsior is 62% worse than the national average

Compare San Francisco, CA Weather

      vs
      How would you rate the weather in Excelsior?
      Write a review to give others more information about this area.
      How would you rate the air quality in Excelsior?
      Write a review to give others more information about this area.
      See all Excelsior poll results

      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 index8,232,3608,232,36018,106,726

      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

      City, StatePopulationAir Quality IndexNational Avg.
      Colma, CA1,5404020%
      Piedmont, CA11,2014020%
      Alto, CA6494020%
      Larkspur, CA12,2684020%
      Sausalito, CA7,1154020%
      San Francisco, CA850,2824020%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Indianapolis, IN846,674548%
      Jacksonville, FL856,6164314%
      Columbus, OH837,038468%
      Fort Worth, TX815,930512%
      Charlotte, NC808,834492%
      San Francisco, CA850,2824020%
      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.