TODAY NOV21
TEMPERATURE35
HUMIDITY66
PRESSURE102100
WIND COND.310 37.1
  • 4527Fri
  • 5038Sat
  • 5731Sun
  • 3920Mon
  • 3823Tue
daynightWeather update from Lamoni, Lamoni Municipal Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Decatur City for July is 76.2 degrees
  • The lowest monthly average temperature in Decatur City for January is 23.9 degrees
  • The most monthly precipitation in Decatur City occurs in August with 10.2 inches
  • The air quality index in Decatur City is 7% better than the national average
  • The pollution index in Decatur City is 76% better than the national average

Compare Decatur City, IA Weather

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      Decatur City 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
      January17°F33°F24°F2.8"
      February20°F37°F27°F3.3"
      March33°F55°F43°F3.3"
      April42°F63°F51°F6.4"
      May53°F74°F63°F7.9"
      June63°F82°F72°F9.5"
      July66°F87°F76°F3.7"
      August67°F87°F76°F10.2"
      September57°F79°F67°F7.1"
      October46°F66°F55°F5.5"
      November32°F52°F41°F3.2"
      December18°F33°F25°F3.4"

      Decatur City 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.
      IndexDecatur CityIowaNational
      Air quality index393942
      Pollution index648,8291,154,5352,726,193

      Decatur City air quality

      MeasurementTotal
      Days measured365
      Days with good air quality306
      Days with moderate air quality59
      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 Decatur City temperature with heat index

      Decatur City monthly precipitation with daily maximum

      Decatur City monthly snow depth with daily maximum

      Decatur City monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Beaconsfield, IA133922.0%
      Le Roy, IA13922.0%
      Grand River, IA1933922.0%
      Pleasanton, IA513922.0%
      Kellerton, IA3023922.0%
      Decatur City, IA1923922.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Abanda, AL1923824.0%
      Loachapoka, AL1924216.0%
      Keswick, CA1924216.0%
      Little Sioux, IA1924020.0%
      Dwale, KY1924216.0%
      Decatur City, IA1923922.0%
      Source: The Decatur City, 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.