TODAY NOV25
TEMPERATURE79
HUMIDITY65
PRESSURE101930
WIND COND.40 20.5
  • 7972Tue
  • 8073Wed
  • 8073
  • 8171Fri
  • 7770Sat
daynightWeather update from Key West Naval Air Station at
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Weather Quick Facts

  • The highest monthly average temperature in Big Coppitt Key for August is 85.5 degrees
  • The lowest monthly average temperature in Big Coppitt Key for January is 70.4 degrees
  • The most monthly precipitation in Big Coppitt Key occurs in September with 7 inches
  • The air quality index in Big Coppitt Key is 19% better than the national average
  • The pollution index in Big Coppitt Key is 1488% worse than the national average

Compare Big Coppitt Key, FL Weather

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      Big Coppitt Key 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
      January65°F77°F70°F2.3"
      February66°F78°F71°F1.8"
      March69°F80°F74°F1.4"
      April73°F83°F78°F2.5"
      May76°F86°F81°F3.0"
      June79°F89°F84°F4.3"
      July80°F90°F85°F4.3"
      August80°F91°F85°F5.5"
      September79°F90°F85°F7.0"
      October77°F86°F81°F5.4"
      November71°F81°F76°F2.3"
      December69°F79°F73°F2.1"

      Big Coppitt Key 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.
      IndexBig Coppitt KeyFloridaNational
      Air quality index343542
      Pollution index43,296,2007,570,7852,726,193

      Big Coppitt Key air quality

      MeasurementTotal
      Days measured362
      Days with good air quality331
      Days with moderate air quality31
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Air quality details

      PollutantTotal
      Arsenic0.060%
      Benzene0.510%
      Carbon Tetrachloride0.150%
      Lead0.330%
      Mercury0.090%

      Average monthly Big Coppitt Key temperature with heat index

      Big Coppitt Key monthly precipitation with daily maximum

      Big Coppitt Key monthly snow depth with daily maximum

      Big Coppitt Key monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Key West, FL24,4953432.0%
      Stock Island, FL4,6923432.0%
      Cudjoe Key, FL2,1573432.0%
      Big Coppitt Key, FL2,6443432.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Rio Hondo, TX2,6444412.0%
      Sainte-Croix, QC2,644n/a 
      Eutaw, AL2,6433530.0%
      Phoenix, NY2,6433726.0%
      Cap-Pelé, NB2,643n/a 
      Big Coppitt Key, FL2,6443432.0%
      Source: The Big Coppitt Key, FL 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.