TODAY JUL05
TEMPERATURE87
HUMIDITY57
PRESSURE29.98
WIND COND.150 13
  • 9068Mon20%
  • 9172Tue40%
  • 9370Wed
  • 8969Thu
  • 9169Fri
daynightWeather update from Tekamah, Tekamah Municipal Airport at

Key findings

  • The highest monthly average temperature in Onawa for July is 77 degrees
  • The lowest monthly average temperature in Onawa for January is 20 degrees
  • The most monthly precipitation in Onawa occurs in May with 9.7 inches
  • The air quality index in Onawa is 30% better than the national average
  • The pollution index in Onawa is 89% 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 index353950
      Pollution index565,4511,643,8365,066,862

      Onawa air quality information

      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

      Onawa air quality information

      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

      City, StatePopulationAir Quality IndexNational Avg.
      Smithland, IA1853530%
      Macy, NE8743530%
      Blencoe, IA2533530%
      Turin, IA803530%
      Castana, IA943530%
      Onawa, IA2,9063530%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Bald Knob, AR2,9064510%
      Tularosa, NM2,9071080%
      Follansbee, WV2,905468%
      Kewaunee, WI2,9073628%
      Fairfield, TX2,9054118%
      Onawa, IA2,9063530%
      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.