TODAY MAR29
TEMPERATURE55
HUMIDITY86
PRESSURE
WIND COND.117 3.2
  • 6546Fri20%
  • 5947Sat100%80%
  • 6146Sun90%50%
  • 6446Mon
  • 7149Tue
daynightWeather update from EW4858 El Cajon at
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Weather Quick Facts

  • The highest monthly average temperature in Bostonia for August is 72.2 degrees
  • The lowest monthly average temperature in Bostonia for December is 55.8 degrees
  • The most monthly precipitation in Bostonia occurs in December with 2.5 inches
  • The air quality index in Bostonia is 52% worse than the national average
  • The pollution index in Bostonia is 94% better than the national average

Compare Bostonia, CA Weather

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      Bostonia 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"

      Bostonia 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.
      IndexBostoniaCaliforniaNational
      Air quality index645542
      Pollution index162,74010,473,1902,726,193

      Bostonia 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

      Bostonia air quality information

      PollutantTotal
      Arsenic0.000%
      Benzene0.003%
      Carbon Tetrachloride0.000%
      Lead0.000%
      Mercury0.000%

      Average monthly Bostonia temperature with heat index

      Bostonia monthly precipitation with daily maximum

      Bostonia monthly snow depth with daily maximum

      Bostonia monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Coronado, CA24,5266428.0%
      National City, CA61,3426428.0%
      Alpine, CA14,9586428.0%
      Eucalyptus Hills, CA6,4486428.0%
      La Mesa, CA60,2086428.0%
      Bostonia, CA17,5326428.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Centerville, UT17,527512.0%
      Marion, IL17,5394314.0%
      Godfrey, IL17,540548.0%
      Kingsland, GA17,5233628.0%
      Wailuku, HI17,5231570.0%
      Bostonia, CA17,5326428.0%
      Source: The Bostonia, 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.