TODAY OCT13
TEMPERATURE81
HUMIDITY47
PRESSURE101860
WIND COND.20 11.2
  • 8764
  • 8259Tue
  • 6954Wed
  • 7161Thu
  • 7567Fri
daynightWeather update from Jacksonville Naval Air Station at
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Weather Quick Facts

  • The highest monthly average temperature in San Marco for August is 83.7 degrees
  • The lowest monthly average temperature in San Marco for January is 56.4 degrees
  • The most monthly precipitation in San Marco occurs in June with 8.1 inches
  • The air quality index in San Marco is 2% worse than the national average
  • The pollution index in San Marco is 140% worse than the national average

Compare Jacksonville, FL Weather

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      San Marco 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
      January47°F67°F56°F3.1"
      February49°F70°F59°F2.9"
      March55°F76°F65°F2.8"
      April63°F82°F72°F2.6"
      May69°F87°F77°F4.8"
      June75°F92°F82°F8.1"
      July77°F93°F84°F6.4"
      August77°F93°F84°F6.7"
      September75°F89°F81°F4.7"
      October66°F83°F74°F3.4"
      November56°F75°F65°F1.8"
      December52°F71°F60°F2.9"

      San Marco 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.
      IndexSan MarcoJacksonvilleFlorida
      Air quality index434335
      Pollution index6,554,7106,554,7107,570,785

      San Marco air quality

      MeasurementTotal
      Days measured365
      Days with good air quality245
      Days with moderate air quality119
      Days w/ poor A.Q. for sensitive groups1
      Days with unhealthy air quality0

      Air quality details

      PollutantTotal
      Arsenic0.020%
      Benzene0.040%
      Carbon Tetrachloride0.002%
      Lead0.070%
      Mercury0.010%

      Average monthly San Marco temperature with heat index

      San Marco monthly precipitation with daily maximum

      San Marco monthly snow depth with daily maximum

      San Marco monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Fruit Cove, FL33,0384314.0%
      Oakleaf Plantation, FL28,1534314.0%
      Lakeside, FL31,0584314.0%
      Bellair-Meadowbrook Terrace, FL15,1684314.0%
      Orange Park, FL8,7644314.0%
      Jacksonville, FL902,4884314.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Fort Worth, TX892,221512.0%
      Columbus, OH889,079468.0%
      San Francisco, CA874,7844020.0%
      Charlotte, NC873,570492.0%
      Indianapolis, IN869,387548.0%
      Jacksonville, FL902,4884314.0%
      Source: The San Marco, Jacksonville, 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.