TODAY NOV02
TEMPERATURE63
HUMIDITY43
PRESSURE102780
WIND COND.360 11.2
  • 7561Sun
  • 7663Mon
  • 7861Tue80%
  • 7156Wed80%30%
  • 7049Thu40%20%
daynightWeather update from Louisville, Bowman Field Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Thornhill for July is 78.5 degrees
  • The lowest monthly average temperature in Thornhill for January is 35.3 degrees
  • The most monthly precipitation in Thornhill occurs in April with 6.3 inches
  • The air quality index in Thornhill is 16% worse than the national average
  • The pollution index in Thornhill is 273% worse than the national average

Compare Thornhill, KY Weather

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      Thornhill 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
      January27°F45°F35°F3.7"
      February29°F47°F37°F2.9"
      March39°F60°F48°F4.5"
      April48°F71°F59°F6.3"
      May57°F79°F68°F5.7"
      June66°F87°F77°F5.3"
      July69°F89°F79°F5.6"
      August68°F89°F78°F3.7"
      September61°F83°F71°F4.6"
      October48°F71°F59°F4.4"
      November38°F59°F48°F3.5"
      December31°F48°F39°F4.8"

      Thornhill 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.
      IndexThornhillKentuckyNational
      Air quality index494542
      Pollution index10,162,7001,369,1312,726,193

      Thornhill air quality

      MeasurementTotal
      Days measured365
      Days with good air quality195
      Days with moderate air quality166
      Days w/ poor A.Q. for sensitive groups4
      Days with unhealthy air quality0

      Air quality details

      PollutantTotal
      Arsenic0.010%
      Benzene0.060%
      Carbon Tetrachloride0.010%
      Lead0.050%
      Mercury0.140%

      Average monthly Thornhill temperature with heat index

      Thornhill monthly precipitation with daily maximum

      Thornhill monthly snow depth with daily maximum

      Thornhill monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Kingsley, KY425492.0%
      Norbourne Estates, KY510492.0%
      St. Regis Park, KY1,568492.0%
      Strathmoor Village, KY563492.0%
      Anchorage, KY2,357492.0%
      Thornhill, KY193492.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Russian Mission, AK1933138.0%
      Rackerby, CA1934412.0%
      Grand River, IA1933922.0%
      Oakford, IL1934020.0%
      Severy, KS1932256.0%
      Thornhill, KY193492.0%
      Source: The Thornhill, KY 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.