TODAY MAY13
TEMPERATURE75
HUMIDITY91
PRESSURE30.01
WIND COND.200 5.4
  • 8677Thu30%30%
  • 8677Fri50%50%
  • 8576Sat50%30%
  • 8576Sun30%20%
  • 8475Mon20%30%
daynightWeather update from Homestead Air Force Base at

Key findings

  • The highest monthly average temperature in Key Largo for August is 83 degrees
  • The lowest monthly average temperature in Key Largo for February is 66.9 degrees
  • The most monthly precipitation in Key Largo occurs in August with 17.1 inches
  • The air quality index in Key Largo is 18% better than the national average
  • The pollution index in Key Largo is 754% worse than the national average

Compare Key Largo, FL Weather

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      Key Largo 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
      January62°F76°F69°F1.2"
      February60°F76°F67°F3.2"
      March64°F78°F71°F5.1"
      April65°F81°F73°F9.2"
      May71°F84°F77°F11.5"
      June74°F87°F80°F16.0"
      July77°F89°F82°F11.4"
      August78°F89°F83°F17.1"
      September76°F88°F81°F11.8"
      October75°F85°F79°F8.5"
      November67°F81°F73°F2.7"
      December63°F78°F70°F1.4"

      Key Largo 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.
      IndexKey LargoFloridaNational
      Air quality index413550
      Pollution index43,296,20015,391,3445,066,862

      Key Largo air quality information

      MeasurementTotal
      Days measured363
      Days with good air quality284
      Days with moderate air quality77
      Days w/ poor A.Q. for sensitive groups2
      Days with unhealthy air quality0

      Key Largo air quality information

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

      Average monthly Key Largo temperature with heat index

      Key Largo monthly precipitation with daily maximum

      Key Largo monthly snow depth with daily maximum

      Key Largo monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Islamorada, Village of Islands, FL6,4814118%
      Tavernier, FL2,1824118%
      North Key Largo, FL1,0384118%
      Key Largo, FL10,0244118%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Woodbury, NJ10,024512%
      East Stroudsburg, PA10,0233432%
      George Mason, VA10,028476%
      Plymouth, IN10,0124216%
      Bonham, TX10,040325550%
      Key Largo, FL10,0244118%
      Source: The Key Largo, 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.