TODAY NOV21
TEMPERATURE
HUMIDITY
PRESSURE
WIND COND.
  • 6848Fri
  • 6654Sat50%
  • 6552Sun30%
  • 6653Mon
  • 6551Tue
daynightWeather update from EW3219 National City at
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Weather Quick Facts

  • The highest monthly average temperature in Rancho Del Rey for September is 67.9 degrees
  • The lowest monthly average temperature in Rancho Del Rey for December is 55.1 degrees
  • The most monthly precipitation in Rancho Del Rey occurs in February with 3.8 inches
  • The air quality index in Rancho Del Rey is 52% worse than the national average
  • The pollution index in Rancho Del Rey is 1581% worse than the national average

Compare Chula Vista, CA Weather

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      Rancho Del Rey 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
      January48°F64°F55°F2.8"
      February49°F64°F56°F3.8"
      March51°F65°F58°F0.1"
      April53°F66°F59°F0.0"
      May57°F67°F62°F1.5"
      June60°F68°F63°F0.0"
      July63°F72°F67°F0.0"
      August64°F73°F68°F0.0"
      September63°F74°F68°F0.3"
      October58°F72°F64°F0.0"
      November53°F69°F60°F0.1"
      December48°F64°F55°F1.5"

      Rancho Del Rey 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.
      IndexRancho Del ReyChula VistaCalifornia
      Air quality index646455
      Pollution index45,820,50045,820,50010,473,190

      Rancho Del Rey 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 Rancho Del Rey temperature with heat index

      Rancho Del Rey monthly precipitation with daily maximum

      Rancho Del Rey monthly snow depth with daily maximum

      Rancho Del Rey monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Coronado, CA24,5266428.0%
      Lemon Grove, CA26,7396428.0%
      Spring Valley, CA31,8666428.0%
      El Cajon, CA103,2496428.0%
      La Mesa, CA60,2086428.0%
      Chula Vista, CA268,7796428.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Fort Wayne, IN268,3784510.0%
      Irvine, CA272,6948978.0%
      St. Petersburg, FL264,0014314.0%
      Jersey City, NJ262,652512.0%
      Toledo, OH275,1164020.0%
      Chula Vista, CA268,7796428.0%
      Source: The Rancho Del Rey, Chula Vista, 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.