TODAY OCT22
TEMPERATURE76
HUMIDITY83
PRESSURE30.02
WIND COND.40 6.9
  • 8577Tue30%30%
  • 8577Wed30%20%
  • 8678Thu20%20%
  • 8678Fri20%20%
  • 8680Sat20%30%
daynightWeather update from Homestead Air Force Base at
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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"

Did you know?

  • The highest monthly average temperature in Key Largo for August is 83 degrees.
  • The lowest monthly average temperature in Key Largo for February is 67 degrees.
  • The most monthly precipitation in Key Largo occurs in August with 17.1 inches.
  • The air quality index in Key Largo is 17% better than the national average.
  • The pollution index in Key Largo is 754% worse than the national average.

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Compare Key Largo, FL Weather To Other Cities

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 measured365
Days with good air quality279
Days with moderate air quality83
Days w/ poor A.Q. for sensitive groups3
Days with unhealthy air quality

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.
Tavernier, FL2,1824118%
Islamorada, Village of Islands, FL6,4814118%
North Key Largo, FL1,0384118%
Key Largo, FL10,0244118%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Woodbury, NJ10,0245714%
East Stroudsburg, PA10,0233922%
George Mason, VA10,028492%
Plymouth, IN10,012512%
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.