TODAY APR27
TEMPERATURE50
HUMIDITY48
PRESSURE
WIND COND.230 24.1
  • 4929Sat80%20%
  • 6131Sun
  • 6835Mon
  • 7238Tue
  • 7337Wed
daynightWeather update from Window Rock, Window Rock Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Fort Defiance for July is 70.8 degrees
  • The lowest monthly average temperature in Fort Defiance for January is 27 degrees
  • The most monthly precipitation in Fort Defiance occurs in July with 2.3 inches
  • The air quality index in Fort Defiance is 60% better than the national average
  • The pollution index in Fort Defiance is 115% worse than the national average

Compare Fort Defiance, AZ Weather

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      Fort Defiance 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
      January12°F45°F27°F1.1"
      February18°F50°F33°F0.6"
      March23°F59°F41°F0.4"
      April29°F66°F48°F0.4"
      May36°F73°F56°F0.6"
      June45°F86°F68°F0.4"
      July54°F88°F71°F2.3"
      August52°F84°F68°F1.9"
      September43°F79°F61°F1.3"
      October31°F69°F49°F0.7"
      November21°F58°F38°F0.6"
      December15°F46°F29°F1.1"

      Fort Defiance 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.
      IndexFort DefianceArizonaNational
      Air quality index175742
      Pollution index5,861,7109,766,0192,726,193

      Fort Defiance air quality information

      MeasurementTotal
      Days measured128
      Days with good air quality127
      Days with moderate air quality1
      Days w/ poor A.Q. for sensitive groups
      Days with unhealthy air quality

      Fort Defiance air quality information

      PollutantTotal
      Arsenic0.310%
      Benzene0.030%
      Carbon Tetrachloride0.004%
      Lead0.090%
      Mercury0.250%

      Average monthly Fort Defiance temperature with heat index

      Fort Defiance monthly precipitation with daily maximum

      Fort Defiance monthly snow depth with daily maximum

      Fort Defiance monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Navajo, NM1,8181766.0%
      St. Michaels, AZ9161766.0%
      Rock Springs, NM1,1661766.0%
      Window Rock, AZ2,4511766.0%
      Tse Bonito, NM2061766.0%
      Fort Defiance, AZ4,2091766.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Rigby, ID4,2094314.0%
      Deer Park, WA4,2094314.0%
      Meadowbrook, CA4,2088978.0%
      Mulberry, OH4,210548.0%
      Headingley, MB4,210n/a 
      Fort Defiance, AZ4,2091766.0%
      Source: The Fort Defiance, AZ 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.