TODAY NOV21
TEMPERATURE42
HUMIDITY53
PRESSURE101630
WIND COND.280 22.3
  • 4631Fri
  • 5237Sat
  • 6250Sun40%
  • 5829Mon30%
  • 4329Tue20%
daynightWeather update from St. Louis Downtown Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Lebanon for July is 77.9 degrees
  • The lowest monthly average temperature in Lebanon for January is 31.8 degrees
  • The most monthly precipitation in Lebanon occurs in April with 10.2 inches
  • The air quality index in Lebanon is 28% worse than the national average
  • The pollution index in Lebanon is 122% worse than the national average

Compare Lebanon, IL Weather

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      Lebanon 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
      January23°F42°F32°F5.6"
      February25°F45°F34°F3.8"
      March37°F59°F47°F7.1"
      April47°F70°F57°F10.2"
      May56°F77°F66°F8.9"
      June65°F87°F76°F9.2"
      July68°F89°F78°F8.0"
      August66°F88°F76°F7.8"
      September58°F82°F69°F8.4"
      October47°F70°F57°F8.6"
      November36°F57°F46°F6.9"
      December28°F45°F36°F8.2"

      Lebanon 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.
      IndexLebanonIllinoisNational
      Air quality index544142
      Pollution index6,055,6403,148,6942,726,193

      Lebanon air quality

      MeasurementTotal
      Days measured365
      Days with good air quality134
      Days with moderate air quality221
      Days w/ poor A.Q. for sensitive groups8
      Days with unhealthy air quality2

      Air quality details

      PollutantTotal
      Arsenic0.010%
      Benzene0.070%
      Carbon Tetrachloride0.040%
      Lead0.100%
      Mercury0.230%

      Average monthly Lebanon temperature with heat index

      Lebanon monthly precipitation with daily maximum

      Lebanon monthly snow depth with daily maximum

      Lebanon monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Germantown, IL1,2794314.0%
      Okawville, IL1,4694314.0%
      Highland, IL10,122548.0%
      Pierron, IL393548.0%
      Millstadt, IL3,882548.0%
      Lebanon, IL4,443548.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Winfield, AL4,4433530.0%
      Beecher, IL4,4435510.0%
      Stellarton, NS4,442n/a 
      Dilley, TX4,441492.0%
      Armonk, NY4,4404314.0%
      Lebanon, IL4,443548.0%
      Source: The Lebanon, 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.