TODAY NOV02
TEMPERATURE57
HUMIDITY64
PRESSURE102030
WIND COND.140 18.4
  • 6454Sun70%60%
  • 5936Mon60%60%
  • 5231Tue40%
  • 5533Wed
  • 5331Thu
daynightWeather update from Tekamah, Tekamah Municipal Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Onawa for July is 76.7 degrees
  • The lowest monthly average temperature in Onawa for January is 20.4 degrees
  • The most monthly precipitation in Onawa occurs in May with 9.7 inches
  • The air quality index in Onawa is 17% better than the national average
  • The pollution index in Onawa is 79% better than the national average

Compare Onawa, IA Weather

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      Onawa 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
      January13°F29°F20°F0.9"
      February18°F35°F25°F2.3"
      March31°F56°F41°F4.5"
      April40°F65°F51°F7.4"
      May53°F77°F64°F9.7"
      June63°F85°F73°F4.3"
      July65°F89°F77°F4.2"
      August64°F85°F74°F5.9"
      September54°F82°F67°F2.4"
      October42°F68°F54°F2.7"
      November27°F53°F39°F2.5"
      December12°F30°F21°F1.9"

      Onawa 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.
      IndexOnawaIowaNational
      Air quality index353942
      Pollution index565,4511,154,5352,726,193

      Onawa air quality

      MeasurementTotal
      Days measured364
      Days with good air quality322
      Days with moderate air quality42
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Air quality details

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

      Average monthly Onawa temperature with heat index

      Onawa monthly precipitation with daily maximum

      Onawa monthly snow depth with daily maximum

      Onawa monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Hornick, IA2863530.0%
      Macy, NE9273530.0%
      Blencoe, IA2383530.0%
      Rodney, IA653530.0%
      Turin, IA1483530.0%
      Onawa, IA2,7883530.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Lake Heritage, PA2,7884216.0%
      Sainte-Anne-de-Beaupré, QC2,788n/a 
      Saint-Chrysostome, QC2,788n/a 
      Bayview, CA2,7872746.0%
      Lake Helen, FL2,7873726.0%
      Onawa, IA2,7883530.0%
      Source: The Onawa, 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.