TODAY NOV06
TEMPERATURE52
HUMIDITY35
PRESSURE
WIND COND.30 14.5
  • 7143Wed
  • 7143Thu
  • 7144Fri
  • 7047Sat
  • 7051Sun
daynightWeather update from BLACK DIAMOND at
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Weather Quick Facts

  • The highest monthly average temperature in Discovery Bay for July is 70.9 degrees
  • The lowest monthly average temperature in Discovery Bay for January is 47.4 degrees
  • The most monthly precipitation in Discovery Bay occurs in December with 2.8 inches
  • The air quality index in Discovery Bay is 7% worse than the national average
  • The pollution index in Discovery Bay is 402% worse than the national average

Compare Discovery Bay, CA Weather

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      Discovery Bay 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
      January38°F59°F47°F2.6"
      February41°F63°F51°F2.6"
      March43°F67°F54°F2.1"
      April45°F72°F57°F1.4"
      May50°F78°F62°F0.3"
      June54°F85°F67°F0.2"
      July58°F90°F71°F0.0"
      August57°F89°F70°F0.0"
      September56°F88°F69°F0.1"
      October50°F79°F63°F0.9"
      November43°F67°F54°F1.5"
      December38°F60°F48°F2.8"

      Discovery Bay 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.
      IndexDiscovery BayCaliforniaNational
      Air quality index455542
      Pollution index13,698,50010,473,1902,726,193

      Discovery Bay air quality

      MeasurementTotal
      Days measured365
      Days with good air quality229
      Days with moderate air quality123
      Days w/ poor A.Q. for sensitive groups12
      Days with unhealthy air quality1

      Air quality details

      PollutantTotal
      Arsenic0.040%
      Benzene0.110%
      Carbon Tetrachloride0.330%
      Lead0.070%
      Mercury0.120%

      Average monthly Discovery Bay temperature with heat index

      Discovery Bay monthly precipitation with daily maximum

      Discovery Bay monthly snow depth with daily maximum

      Discovery Bay monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Bethel Island, CA2,0154510.0%
      Byron, CA2,0574510.0%
      Mountain House, CA21,3874510.0%
      Terminous, CA4004510.0%
      Country Club, CA9,2424510.0%
      Discovery Bay, CA15,9044510.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Aberdeen, MD15,904468.0%
      Grandville, MI15,9063824.0%
      Sayville, NY15,9104314.0%
      Cloverly, MD15,915476.0%
      Bellmore, NY15,887512.0%
      Discovery Bay, CA15,9044510.0%
      Source: The Discovery Bay, 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.