TODAY OCT11
TEMPERATURE44
HUMIDITY81
PRESSURE102000
WIND COND.
  • 8147Fri
  • 6443Sat40%
  • 5936Sun20%30%
  • 533030%
  • 5332Tue
daynightWeather update from Watertown at
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Weather Quick Facts

  • The highest monthly average temperature in Waterloo for July is 71.6 degrees
  • The lowest monthly average temperature in Waterloo for January is 20.6 degrees
  • The most monthly precipitation in Waterloo occurs in June with 7.3 inches
  • The air quality index in Waterloo is 12% better than the national average
  • The pollution index in Waterloo is 3% worse than the national average

Compare Waterloo, WI 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
      January13°F28°F21°F3.6"
      February14°F30°F22°F1.7"
      March26°F45°F35°F3.4"
      April37°F59°F47°F6.3"
      May47°F71°F59°F5.1"
      June57°F79°F68°F7.3"
      July61°F83°F72°F3.8"
      August59°F81°F70°F5.7"
      September51°F74°F62°F4.6"
      October41°F61°F50°F6.5"
      November30°F47°F38°F4.2"
      December18°F33°F25°F3.3"

      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.
      IndexWaterlooWisconsinNational
      Air quality index376942
      Pollution index2,796,3102,842,4182,726,193

      Waterloo air quality

      MeasurementTotal
      Days measured203
      Days with good air quality191
      Days with moderate air quality12
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Air quality details

      PollutantTotal
      Arsenic0.003%
      Benzene0.040%
      Carbon Tetrachloride0.005%
      Lead0.001%
      Mercury0.004%

      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.
      Jefferson, WI8,0113726.0%
      Rockdale, WI2103726.0%
      Johnson Creek, WI3,0293726.0%
      Lake Mills, WI5,9363726.0%
      Watertown, WI23,5613726.0%
      Waterloo, WI3,3343726.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Port Ewen, NY3,3343628.0%
      Nicholls, GA3,3332648.0%
      Wyncote, PA3,333512.0%
      Glasgow, MT3,3323432.0%
      Lake Holm, WA3,3324510.0%
      Waterloo, WI3,3343726.0%
      Source: The Waterloo, WI 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.