TODAY MAY09
TEMPERATURE55
HUMIDITY100
PRESSURE
WIND COND.156 4.8
  • 7360Sun
  • 6759Mon
  • 7559Tue
  • 7659Wed
  • 7760Thu
daynightWeather update from WHITTIER HILLS at

Key findings

  • The highest monthly average temperature in Downey for August is 72.1 degrees
  • The lowest monthly average temperature in Downey for December is 56.2 degrees
  • The most monthly precipitation in Downey occurs in December with 2.7 inches
  • The air quality index in Downey is 45% worse than the national average
  • The pollution index in Downey is 2653% worse than the national average

Compare Downey, CA Weather

      vs
      How would you rate the weather in Downey?
      Write a review to give others more information about this area.
      How would you rate the air quality in Downey?
      Write a review to give others more information about this area.
      See all Downey poll results

      Downey 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
      January46°F70°F57°F2.6"
      February48°F70°F58°F2.5"
      March51°F72°F60°F1.0"
      April53°F74°F62°F0.6"
      May57°F75°F65°F0.3"
      June61°F78°F67°F0.0"
      July65°F83°F71°F0.2"
      August65°F85°F72°F0.0"
      September63°F85°F72°F0.3"
      October59°F81°F68°F0.5"
      November52°F76°F62°F0.7"
      December46°F69°F56°F2.7"

      Downey 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.
      IndexDowneyCaliforniaNational
      Air quality index725550
      Pollution index139,490,00018,106,7265,066,862

      Downey air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality66
      Days with moderate air quality208
      Days w/ poor A.Q. for sensitive groups62
      Days with unhealthy air quality28

      Downey air quality information

      PollutantTotal
      Arsenic0.200%
      Benzene0.950%
      Carbon Tetrachloride0.080%
      Lead1.320%
      Mercury0.440%

      Average monthly Downey temperature with heat index

      Downey monthly precipitation with daily maximum

      Downey monthly snow depth with daily maximum

      Downey monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Monterey Park, CA61,0017244%
      Santa Fe Springs, CA17,4367244%
      Westminster, CA91,6357244%
      Buena Park, CA82,7717244%
      Avocado Heights, CA16,1887244%
      Downey, CA113,2237244%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Arvada, CO113,5325816%
      Round Rock, TX112,7674412%
      Wilmington, NC113,7243432%
      Miami Gardens, FL112,5144118%
      Costa Mesa, CA112,4398978%
      Downey, CA113,2237244%
      Source: The Downey, 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.