TODAY MAY08
TEMPERATURE63
HUMIDITY65
PRESSURE29.98
WIND COND.190 11.2
  • 6857Sat
  • 6957Sun
  • 6957Mon
  • 7057Tue
  • 7359Wed
daynightWeather update from San Diego, San Diego International-Lindbergh Field at

Key findings

  • The highest monthly average temperature in San Diego for August is 71.1 degrees
  • The lowest monthly average temperature in San Diego for December is 57.5 degrees
  • The most monthly precipitation in San Diego occurs in December with 2.2 inches
  • The air quality index in San Diego is 29% worse than the national average
  • The pollution index in San Diego is 804% worse than the national average

Compare San Diego, CA Weather

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      San Diego 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
      January49°F68°F58°F1.7"
      February51°F68°F59°F1.8"
      March54°F69°F60°F1.0"
      April56°F70°F62°F0.6"
      May60°F70°F64°F0.4"
      June62°F72°F66°F0.0"
      July66°F76°F70°F0.2"
      August67°F78°F71°F0.0"
      September66°F78°F71°F0.2"
      October61°F77°F68°F0.5"
      November55°F73°F63°F0.9"
      December49°F67°F58°F2.2"

      San Diego 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 DiegoCaliforniaNational
      Air quality index645550
      Pollution index45,820,50018,106,7265,066,862

      San Diego air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality87
      Days with moderate air quality253
      Days w/ poor A.Q. for sensitive groups23
      Days with unhealthy air quality2

      San Diego air quality information

      PollutantTotal
      Arsenic1.130%
      Benzene0.410%
      Carbon Tetrachloride0.030%
      Lead0.600%
      Mercury0.080%

      Average monthly San Diego temperature with heat index

      San Diego monthly precipitation with daily maximum

      San Diego monthly snow depth with daily maximum

      San Diego monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Bonita, CA12,8856428%
      La Presa, CA37,1106428%
      Spring Valley, CA30,1286428%
      Eucalyptus Hills, CA5,5836428%
      Rancho San Diego, CA22,0186428%
      San Diego, CA1,374,8126428%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      San Antonio, TX1,439,358492%
      Dallas, TX1,278,433512%
      Phoenix, AZ1,555,3247448%
      Philadelphia, PA1,559,938512%
      San Jose, CA1,009,3634314%
      San Diego, CA1,374,8126428%
      Source: The San Diego, 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.