TODAY NOV21
TEMPERATURE25
HUMIDITY86
PRESSURE102070
WIND COND.310 27.7
  • 4523Fri
  • 4834Sat
  • 5223Sun
  • 3515Mon
  • 3418Tue
daynightWeather update from Harlan, Harlan Municipal Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Jacksonville for July is 78.2 degrees
  • The lowest monthly average temperature in Jacksonville for January is 23.9 degrees
  • The most monthly precipitation in Jacksonville occurs in August with 6.1 inches
  • The air quality index in Jacksonville is 5% better than the national average
  • The pollution index in Jacksonville is 81% better than the national average

Compare Jacksonville, IA Weather

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      Jacksonville 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
      January14°F37°F24°F0.6"
      February16°F41°F27°F0.9"
      March29°F56°F41°F1.5"
      April40°F67°F53°F3.8"
      May50°F77°F63°F5.2"
      June62°F87°F74°F4.9"
      July66°F91°F78°F3.1"
      August64°F88°F75°F6.1"
      September55°F82°F67°F3.7"
      October42°F69°F54°F3.0"
      November29°F55°F41°F1.0"
      December17°F39°F27°F1.7"

      Jacksonville 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.
      IndexJacksonvilleIowaNational
      Air quality index403942
      Pollution index517,6911,154,5352,726,193

      Jacksonville air quality

      MeasurementTotal
      Days measured365
      Days with good air quality283
      Days with moderate air quality82
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Air quality details

      PollutantTotal
      Arsenic0.000%
      Benzene0.010%
      Carbon Tetrachloride0.001%
      Lead0.002%
      Mercury0.000%

      Average monthly Jacksonville temperature with heat index

      Jacksonville monthly precipitation with daily maximum

      Jacksonville monthly snow depth with daily maximum

      Jacksonville monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Brayton, IA1114020.0%
      Gray, IA344020.0%
      Corley, IA74020.0%
      Avoca, IA1,3684020.0%
      Exira, IA8484020.0%
      Jacksonville, IA104020.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Memphis, AL103530.0%
      Indian Falls, CA10468.0%
      Bolan, IA101570.0%
      Hepburn, IA104020.0%
      Bassett, KS102256.0%
      Jacksonville, IA104020.0%
      Source: The Jacksonville, IA 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.