TODAY NOV17
TEMPERATURE65
HUMIDITY48
PRESSURE101420
WIND COND.280 22.3
  • 6548Mon
  • 6748Tue
  • 7150Wed
  • 7151Thu
  • 7152Fri
daynightWeather update from San Diego International Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Horton Plaza for August is 71.1 degrees
  • The lowest monthly average temperature in Horton Plaza for December is 57.5 degrees
  • The most monthly precipitation in Horton Plaza occurs in December with 2.2 inches
  • The air quality index in Horton Plaza is 52% worse than the national average
  • The pollution index in Horton Plaza is 1581% worse than the national average

Compare San Diego, CA Weather

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      Horton Plaza 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"

      Horton Plaza 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.
      IndexHorton PlazaSan DiegoCalifornia
      Air quality index646455
      Pollution index45,820,50045,820,50010,473,190

      Horton Plaza air quality

      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

      Air quality details

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

      Average monthly Horton Plaza temperature with heat index

      Horton Plaza monthly precipitation with daily maximum

      Horton Plaza monthly snow depth with daily maximum

      Horton Plaza monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Coronado, CA24,5266428.0%
      National City, CA61,3426428.0%
      Casa de Oro-Mount Helix, CA19,3276428.0%
      Rancho San Diego, CA21,4766428.0%
      Imperial Beach, CA27,3346428.0%
      San Diego, CA1,414,5456428.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Calgary, AB1,371,990n/a 
      Dallas, TX1,338,846512.0%
      San Antonio, TX1,529,133492.0%
      Philadelphia, PA1,581,531512.0%
      Phoenix, AZ1,658,4227448.0%
      San Diego, CA1,414,5456428.0%
      Source: The Horton Plaza, 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.