TODAY MAY06
TEMPERATURE80
HUMIDITY76
PRESSURE30.05
WIND COND.90 9.4
  • 9078Thu
  • 9077Fri
  • 8779Sat20%
  • 8780Sun20%
  • 8980Mon
daynightWeather update from Marathon, Marathon Airport at

Key findings

  • The highest monthly average temperature in Marathon for July is 84.8 degrees
  • The lowest monthly average temperature in Marathon for February is 69.9 degrees
  • The most monthly precipitation in Marathon occurs in August with 10.4 inches
  • The air quality index in Marathon is 18% better than the national average
  • The pollution index in Marathon is 754% worse than the national average

Compare Marathon, FL Weather

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      Marathon 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°F71°F2.2"
      February64°F77°F70°F4.1"
      March68°F80°F74°F4.1"
      April70°F82°F76°F5.9"
      May75°F86°F80°F5.5"
      June77°F89°F82°F10.3"
      July80°F91°F85°F7.7"
      August79°F91°F85°F10.4"
      September78°F90°F84°F9.6"
      October78°F87°F82°F5.1"
      November71°F82°F76°F0.7"
      December68°F80°F73°F2.0"

      Marathon 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.
      IndexMarathonFloridaNational
      Air quality index413550
      Pollution index43,296,20015,391,3445,066,862

      Marathon 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

      Marathon air quality information

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

      Average monthly Marathon temperature with heat index

      Marathon monthly precipitation with daily maximum

      Marathon monthly snow depth with daily maximum

      Marathon monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Layton, FL1114118%
      Duck Key, FL7164118%
      Key Colony Beach, FL6964118%
      Marathon, FL8,7014118%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Edgewood, KY8,703548%
      Temperance, MI8,7054020%
      Murphy, MO8,706548%
      Franklin, KY8,7064314%
      Oxford, NC8,7074412%
      Marathon, FL8,7014118%
      Source: The Marathon, 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.