TODAY APR25
TEMPERATURE54
HUMIDITY
PRESSURE101860
WIND COND.270 11.2
  • 6350Fri20%20%
  • 7451Sat
  • 7955Sun
  • 8357Mon
  • 8557Tue
daynightWeather update from San Bernardino Intl. Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Nena for August is 77.8 degrees
  • The lowest monthly average temperature in Nena for December is 55.1 degrees
  • The most monthly precipitation in Nena occurs in December with 1.9 inches
  • The air quality index in Nena is 111% worse than the national average
  • The pollution index in Nena is 1058% worse than the national average

Compare San Bernardino, CA Weather

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      Nena 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
      January44°F70°F56°F1.6"
      February45°F72°F57°F1.2"
      March47°F75°F60°F0.7"
      April50°F78°F63°F0.5"
      May55°F82°F66°F0.2"
      June59°F89°F72°F0.0"
      July65°F94°F77°F0.2"
      August65°F95°F78°F0.1"
      September63°F94°F76°F0.2"
      October56°F85°F69°F0.2"
      November49°F77°F62°F0.5"
      December44°F69°F55°F1.9"

      Nena 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.
      IndexNenaSan BernardinoCalifornia
      Air quality index898955
      Pollution index31,575,30031,575,30010,473,190

      Nena air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality42
      Days with moderate air quality178
      Days w/ poor A.Q. for sensitive groups79
      Days with unhealthy air quality58

      Nena air quality information

      PollutantTotal
      Arsenic0.110%
      Benzene0.260%
      Carbon Tetrachloride0.020%
      Lead0.350%
      Mercury0.280%

      Average monthly Nena temperature with heat index

      Nena monthly precipitation with daily maximum

      Nena monthly snow depth with daily maximum

      Nena monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Bloomington, CA21,9078978.0%
      Highgrove, CA6,2018978.0%
      Redlands, CA71,6808978.0%
      Fontana, CA212,7048978.0%
      Rialto, CA103,5498978.0%
      San Bernardino, CA216,7848978.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Tacoma, WA215,7661864.0%
      Des Moines, IA215,4083922.0%
      Richmond Hill, ON215,407n/a 
      Spring Valley, NV218,697548.0%
      Enterprise, NV214,591548.0%
      San Bernardino, CA216,7848978.0%
      Source: The Nena, San Bernardino, 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.