TODAY NOV02
TEMPERATURE57
HUMIDITY44
PRESSURE102640
WIND COND.140 5.4
  • 5854Sun50%80%
  • 6758Mon100%90%
  • 6440Tue90%
  • 5739Wed
  • 5837Thu
daynightWeather update from Albertus Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Lanark for July is 74 degrees
  • The lowest monthly average temperature in Lanark for January is 22.8 degrees
  • The most monthly precipitation in Lanark occurs in June with 8.9 inches
  • The air quality index in Lanark is equal to the national average
  • The pollution index in Lanark is 23% better than the national average

Compare Lanark, IL Weather

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      Lanark 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°F32°F23°F2.0"
      February16°F34°F25°F2.7"
      March31°F50°F39°F5.0"
      April41°F64°F51°F6.5"
      May51°F75°F62°F4.6"
      June61°F83°F71°F8.9"
      July64°F85°F74°F4.5"
      August61°F83°F72°F4.9"
      September54°F78°F65°F3.6"
      October43°F64°F53°F3.1"
      November32°F50°F40°F2.9"
      December20°F35°F28°F4.0"

      Lanark 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.
      IndexLanarkIllinoisNational
      Air quality index424142
      Pollution index2,097,7403,148,6942,726,193

      Lanark air quality

      MeasurementTotal
      Days measured364
      Days with good air quality268
      Days with moderate air quality96
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Air quality details

      PollutantTotal
      Arsenic0.001%
      Benzene0.060%
      Carbon Tetrachloride0.000%
      Lead0.001%
      Mercury0.300%

      Average monthly Lanark temperature with heat index

      Lanark monthly precipitation with daily maximum

      Lanark monthly snow depth with daily maximum

      Lanark monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Forreston, IL1,3924216.0%
      Coleta, IL2304216.0%
      Pearl City, IL8314216.0%
      Mount Carroll, IL1,5034216.0%
      Milledgeville, IL9874216.0%
      Lanark, IL1,4534216.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Odon, IN1,453198.0%
      Silver Lake, KS1,4534118.0%
      Morrice, MI1,4533628.0%
      North Bend, NE1,4534020.0%
      Hughestown, PA1,4533824.0%
      Lanark, IL1,4534216.0%
      Source: The Lanark, IL 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.