TODAY NOV05
TEMPERATURE65
HUMIDITY21
PRESSURE
WIND COND.294 11.3
  • 7347Tue
  • 6744Wed
  • 6844Thu
  • 7147Fri
  • 7348Sat
daynightWeather update from LAKE MATHEWS at
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Weather Quick Facts

  • The highest monthly average temperature in El Sobrante CDP (Contra Costa County) for August is 77.8 degrees
  • The lowest monthly average temperature in El Sobrante CDP (Contra Costa County) for December is 55.1 degrees
  • The most monthly precipitation in El Sobrante CDP (Contra Costa County) occurs in December with 1.9 inches
  • The air quality index in El Sobrante CDP (Contra Costa County) is 111% worse than the national average
  • The pollution index in El Sobrante CDP (Contra Costa County) is 736% worse than the national average

Compare El Sobrante CDP (Contra Costa County), CA Weather

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      El Sobrante CDP (Contra Costa County) 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"

      El Sobrante CDP (Contra Costa County) 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.
      IndexEl Sobrante CDP (Contra Costa County)CaliforniaNational
      Air quality index895542
      Pollution index22,790,90010,473,1902,726,193

      El Sobrante CDP (Contra Costa County) air quality

      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

      Air quality details

      PollutantTotal
      Arsenic0.060%
      Benzene0.190%
      Carbon Tetrachloride0.010%
      Lead0.220%
      Mercury0.230%

      Average monthly El Sobrante CDP (Contra Costa County) temperature with heat index

      El Sobrante CDP (Contra Costa County) monthly precipitation with daily maximum

      El Sobrante CDP (Contra Costa County) monthly snow depth with daily maximum

      El Sobrante CDP (Contra Costa County) monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Corona, CA168,1128978.0%
      Norco, CA27,0218978.0%
      Lake Elsinore, CA64,2018978.0%
      El Sobrante, CA14,7798978.0%
      Mead Valley, CA20,8178978.0%
      El Sobrante CDP (Contra Costa County), CA12,9638978.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Forest Hill, TX12,964512.0%
      Greenwich, CT12,9674314.0%
      Lynnfield, MA12,9684314.0%
      Claremont, NH12,9693432.0%
      Oakland, NJ12,953512.0%
      El Sobrante CDP (Contra Costa County), CA12,9638978.0%
      Source: The El Sobrante CDP (Contra Costa County), 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.