TODAY MAR29
TEMPERATURE45
HUMIDITY51
PRESSURE101590
WIND COND.30 9.4
  • 6542Fri40%
  • 6037Sat
  • 5641Sun50%70%
  • 5535Mon80%60%
  • 5231Tue40%
daynightWeather update from Cedar Rapids Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Marengo for July is 73.2 degrees
  • The lowest monthly average temperature in Marengo for January is 20.1 degrees
  • The most monthly precipitation in Marengo occurs in June with 7 inches
  • The air quality index in Marengo is 7% better than the national average
  • The pollution index in Marengo is 86% worse than the national average

Compare Marengo, IA Weather

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      Marengo 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
      January12°F29°F20°F0.8"
      February14°F32°F23°F1.0"
      March28°F48°F37°F2.1"
      April39°F63°F50°F4.6"
      May50°F73°F61°F3.9"
      June60°F81°F70°F7.0"
      July63°F84°F73°F4.8"
      August61°F82°F71°F4.7"
      September53°F76°F64°F4.0"
      October42°F63°F52°F3.1"
      November29°F49°F38°F2.1"
      December17°F33°F25°F1.9"

      Marengo 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.
      IndexMarengoIowaNational
      Air quality index393942
      Pollution index5,075,3801,154,5352,726,193

      Marengo air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality287
      Days with moderate air quality78
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Marengo air quality information

      PollutantTotal
      Arsenic0.070%
      Benzene0.050%
      Carbon Tetrachloride2.000%
      Lead0.040%
      Mercury0.100%

      Average monthly Marengo temperature with heat index

      Marengo monthly precipitation with daily maximum

      Marengo monthly snow depth with daily maximum

      Marengo monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Parnell, IA2103530.0%
      Williamsburg, IA3,1523530.0%
      Oxford, IA7073530.0%
      Amana, IA4723922.0%
      Keystone, IA6053922.0%
      Marengo, IA2,4073922.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Nice, CA2,4073138.0%
      Rineyville, KY2,4073922.0%
      Eddystone, PA2,407512.0%
      Friday Harbor, WA2,4063432.0%
      Fulton, KY2,4054412.0%
      Marengo, IA2,4073922.0%
      Source: The Marengo, 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.