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Key findings

  • The highest monthly average temperature in Casa de Oro-Mount Helix for August is 72 degrees
  • The lowest monthly average temperature in Casa de Oro-Mount Helix for December is 56 degrees
  • The most monthly precipitation in Casa de Oro-Mount Helix occurs in December with 2.5 inches
  • The air quality index in Casa de Oro-Mount Helix is 29% worse than the national average
  • The pollution index in Casa de Oro-Mount Helix is 804% worse than the national average

Compare Casa de Oro-Mount Helix, CA Weather

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      Casa de Oro-Mount Helix 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
      January45°F69°F56°F1.9"
      February47°F69°F57°F2.2"
      March50°F70°F59°F1.0"
      April53°F72°F61°F0.7"
      May57°F72°F63°F0.4"
      June61°F76°F66°F0.0"
      July65°F80°F71°F0.2"
      August66°F82°F72°F0.0"
      September64°F83°F72°F0.2"
      October58°F80°F68°F0.5"
      November51°F74°F62°F0.9"
      December46°F68°F56°F2.5"

      Casa de Oro-Mount Helix 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.
      IndexCasa de Oro-Mount HelixCaliforniaNational
      Air quality index645550
      Pollution index45,820,50018,106,7265,066,862

      Casa de Oro-Mount Helix 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

      Casa de Oro-Mount Helix air quality information

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

      Average monthly Casa de Oro-Mount Helix temperature with heat index

      Casa de Oro-Mount Helix monthly precipitation with daily maximum

      Casa de Oro-Mount Helix monthly snow depth with daily maximum

      Casa de Oro-Mount Helix monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Imperial Beach, CA27,1806428%
      National City, CA60,3496428%
      Alpine, CA15,1886428%
      Eucalyptus Hills, CA5,5836428%
      La Mesa, CA59,1256428%
      Casa de Oro-Mount Helix, CA20,1376428%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Oregon, OH20,1374020%
      Belton, TX20,1384216%
      Elmwood Park, NJ20,135512%
      North Amityville, NY20,150512%
      West Mifflin, PA20,1535612%
      Casa de Oro-Mount Helix, CA20,1376428%
      Source: The Casa de Oro-Mount Helix, 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.