TODAY OCT12
TEMPERATURE55
HUMIDITY82
PRESSURE101970
WIND COND.
  • 6044Sat20%
  • 5937Sun20%70%
  • 533230%50%
  • 5130Tue20%
  • 5837Wed
daynightWeather update from Waukesha County Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Hartland for July is 70.3 degrees
  • The lowest monthly average temperature in Hartland for January is 20.8 degrees
  • The most monthly precipitation in Hartland occurs in June with 19.6 inches
  • The air quality index in Hartland is 5% worse than the national average
  • The pollution index in Hartland is 530% worse than the national average

Compare Hartland, WI Weather

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      Hartland 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
      January15°F28°F21°F0.6"
      February15°F29°F22°F2.8"
      March27°F43°F34°F2.9"
      April37°F55°F45°F3.1"
      May47°F67°F56°F8.9"
      June56°F76°F66°F19.6"
      July61°F80°F70°F14.9"
      August60°F78°F69°F2.3"
      September53°F72°F61°F10.4"
      October42°F59°F50°F6.6"
      November31°F46°F38°F3.6"
      December20°F32°F26°F1.8"

      Hartland 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.
      IndexHartlandWisconsinNational
      Air quality index446942
      Pollution index17,168,0002,842,4182,726,193

      Hartland air quality

      MeasurementTotal
      Days measured365
      Days with good air quality254
      Days with moderate air quality108
      Days w/ poor A.Q. for sensitive groups3
      Days with unhealthy air quality0

      Air quality details

      PollutantTotal
      Arsenic0.030%
      Benzene0.160%
      Carbon Tetrachloride0.050%
      Lead0.160%
      Mercury0.150%

      Average monthly Hartland temperature with heat index

      Hartland monthly precipitation with daily maximum

      Hartland monthly snow depth with daily maximum

      Hartland monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Delafield, WI7,5413726.0%
      Ashippun, WI1,0273726.0%
      Chenequa, WI5833726.0%
      Oconomowoc, WI16,9313726.0%
      Neosho, WI6373726.0%
      Hartland, WI9,3174412.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Eagle Point, OR9,3163628.0%
      Flossmoor, IL9,3185510.0%
      Brentwood, PA9,3195612.0%
      Leisure World, MD9,314476.0%
      Sellersburg, IN9,320492.0%
      Hartland, WI9,3174412.0%
      Source: The Hartland, 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.