TODAY JAN18
TEMPERATURE55
HUMIDITY
PRESSURE
WIND COND.
  • 7251
  • 6846Tue
  • 6444Wed
  • 6046Thu
  • 5743Fri
daynightWeather update from SAN FRANCISCO DOWNTOWN at

Key findings

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

Compare San Francisco, CA Weather

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      Mission 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"

      Mission 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.
      IndexMissionSan FranciscoCalifornia
      Air quality index404055
      Pollution index8,232,3608,232,36018,106,726

      Mission 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

      Mission air quality information

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

      Average monthly Mission temperature with heat index

      Mission monthly precipitation with daily maximum

      Mission monthly snow depth with daily maximum

      Mission monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Ross, CA2,3814020%
      Alhambra Valley, CA5014020%
      Brisbane, CA4,5684020%
      Daly City, CA105,5434020%
      Piedmont, CA11,2014020%
      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 Mission, 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.