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Key findings

  • The highest monthly average temperature in Sunol for July is 70.9 degrees
  • The lowest monthly average temperature in Sunol for January is 47.4 degrees
  • The most monthly precipitation in Sunol occurs in December with 2.8 inches
  • The air quality index in Sunol is 14% better than the national average
  • The pollution index in Sunol is 27% worse than the national average

Compare Sunol, CA Weather

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      Sunol 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"

      Sunol 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.
      IndexSunolCaliforniaNational
      Air quality index435550
      Pollution index6,427,29018,106,7265,066,862

      Sunol air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality263
      Days with moderate air quality98
      Days w/ poor A.Q. for sensitive groups4
      Days with unhealthy air quality0

      Sunol air quality information

      PollutantTotal
      Arsenic0.010%
      Benzene0.110%
      Carbon Tetrachloride0.010%
      Lead0.010%
      Mercury0.003%

      Average monthly Sunol temperature with heat index

      Sunol monthly precipitation with daily maximum

      Sunol monthly snow depth with daily maximum

      Sunol monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Castro Valley, CA62,8254020%
      Norris Canyon, CA1,0464020%
      Ashland, CA24,2884020%
      San Lorenzo, CA24,7904020%
      Camino Tassajara, CA3,4564020%
      Sunol, CA1,0044314%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Ellerbe, NC1,0042942%
      Port Republic, NJ1,0043726%
      Town Creek, AL1,0043726%
      Swayzee, IN1,0043726%
      Stephenson, MI1,0043628%
      Sunol, CA1,0044314%
      Source: The Sunol, 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.