TODAY AUG19
TEMPERATURE60
HUMIDITY76
PRESSURE29.9
WIND COND.
  • 9357Sun
  • 8855Mon
  • 8255Tue
  • 8856Wed
  • 8756Thu
daynightWeather update from Fairfield / Travis Air Force Base at

Fairfield Average Weather

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"

Did you know?

  • The highest monthly average temperature in Fairfield for September is 68 degrees.
  • The lowest monthly average temperature in Fairfield for December is 47 degrees.
  • The most monthly precipitation in Fairfield occurs in January with 9.3 inches.
  • The air quality index in Fairfield is 13% better than the national average.
  • The pollution index in Fairfield is 51% better than the national average.

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Compare Fairfield, CA Weather To Other Cities

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 index435550
Pollution index2,457,15018,106,7265,066,862

Fairfield air quality information

MeasurementTotal
Days measured365
Days with good air quality220
Days with moderate air quality143
Days w/ poor A.Q. for sensitive groups2
Days with unhealthy air quality

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

City, StatePopulationAir Quality IndexNational Avg.
Allendale, CA1,3494314%
Hartley, CA2,9884314%
Port Costa, CA2284314%
Vallejo, CA119,6444314%
American Canyon, CA20,3344314%
Fairfield, CA110,9534314%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
West Jordan, UT110,928476%
Inglewood, CA111,0127448%
Rochester, MN111,3963726%
Manchester, NH110,2313628%
Clearwater, FL111,7474314%
Fairfield, CA110,9534314%
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.