TODAY MAR28
TEMPERATURE49
HUMIDITY90
PRESSURE101660
WIND COND.210 18.4
  • 6145Thu
  • 5646Fri70%90%
  • 6044Sat60%20%
  • 6345Sun
  • 7147Mon
daynightWeather update from Fairfield / Travis Air Force Base at
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Weather Quick Facts

  • The highest monthly average temperature in Fairfield for September is 67.8 degrees
  • The lowest monthly average temperature in Fairfield for December is 47.1 degrees
  • The most monthly precipitation in Fairfield occurs in January with 9.3 inches
  • The air quality index in Fairfield is 17% better than the national average
  • The pollution index in Fairfield is 10% better than the national average

Compare Fairfield, CA Weather

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      Fairfield 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
      January41°F57°F48°F9.3"
      February44°F62°F52°F3.6"
      March47°F66°F55°F3.0"
      April49°F70°F58°F1.8"
      May52°F75°F62°F0.0"
      June56°F81°F66°F0.0"
      July57°F83°F67°F0.2"
      August57°F83°F67°F0.0"
      September57°F84°F68°F0.1"
      October53°F76°F63°F0.6"
      November46°F65°F54°F0.8"
      December40°F57°F47°F3.3"

      Fairfield 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.
      IndexFairfieldCaliforniaNational
      Air quality index355542
      Pollution index2,457,15010,473,1902,726,193

      Fairfield air quality information

      MeasurementTotal
      Days measured363
      Days with good air quality330
      Days with moderate air quality31
      Days w/ poor A.Q. for sensitive groups2
      Days with unhealthy air quality0

      Fairfield air quality information

      PollutantTotal
      Arsenic0.010%
      Benzene0.080%
      Carbon Tetrachloride0.002%
      Lead0.010%
      Mercury0.020%

      Average monthly Fairfield temperature with heat index

      Fairfield monthly precipitation with daily maximum

      Fairfield monthly snow depth with daily maximum

      Fairfield monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Allendale, CA1,4293530.0%
      Green Valley CDP (Los Angeles County), CA1,0003530.0%
      Moskowite Corner, CA693530.0%
      Suisun City, CA29,4593530.0%
      Green Valley, CA1,5833530.0%
      Fairfield, CA116,5443530.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Provo, UT116,886468.0%
      Clearwater, FL115,9754314.0%
      Rochester, MN117,1343628.0%
      Independence, MO117,139476.0%
      Brandon, FL115,9094314.0%
      Fairfield, CA116,5443530.0%
      Source: The Fairfield, 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.