TODAY NOV02
TEMPERATURE49
HUMIDITY99
PRESSURE101090
WIND COND.64
  • 5539Sun50%30%
  • 5339Mon100%80%
  • 5333Tue60%
  • 5533Wed
  • 5835Thu
daynightWeather update from CW8892 Sweet Home at
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Weather Quick Facts

  • The highest monthly average temperature in Waterloo for July is 68.2 degrees
  • The lowest monthly average temperature in Waterloo for December is 40.1 degrees
  • The most monthly precipitation in Waterloo occurs in January with 7.8 inches
  • The air quality index in Waterloo is 33% better than the national average
  • The pollution index in Waterloo is 97% better than the national average

Compare Waterloo, OR Weather

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      Waterloo 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
      January36°F48°F41°F7.8"
      February37°F53°F44°F4.4"
      March40°F58°F47°F5.7"
      April41°F64°F51°F3.3"
      May46°F73°F57°F3.5"
      June51°F78°F62°F1.9"
      July54°F86°F68°F3.3"
      August54°F86°F68°F2.1"
      September49°F80°F63°F3.4"
      October44°F67°F54°F5.6"
      November40°F55°F46°F5.4"
      December35°F47°F40°F7.2"

      Waterloo 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.
      IndexWaterlooOregonNational
      Air quality index283242
      Pollution index77,0387,156,3562,726,193

      Waterloo air quality

      MeasurementTotal
      Days measured365
      Days with good air quality280
      Days with moderate air quality83
      Days w/ poor A.Q. for sensitive groups2
      Days with unhealthy air quality0

      Air quality details

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

      Average monthly Waterloo temperature with heat index

      Waterloo monthly precipitation with daily maximum

      Waterloo monthly snow depth with daily maximum

      Waterloo monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Shedd, OR2901766.0%
      Halsey, OR1,1391766.0%
      Holley, OR3682844.0%
      Albany, OR54,4422844.0%
      Lacomb, OR5812844.0%
      Waterloo, OR3062844.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Maytown, AL306536.0%
      Waldo, AL3063824.0%
      Buckner, AR3063922.0%
      Romeo, CO3061570.0%
      Bostwick, GA3064412.0%
      Waterloo, OR3062844.0%
      Source: The Waterloo, OR 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.