TODAY MAY13
TEMPERATURE37
HUMIDITY89
PRESSURE30.39
WIND COND.
  • 6643Thu
  • 6951Fri
  • 6856Sat30%50%
  • 7261Sun70%60%
  • 7561Mon60%60%
daynightWeather update from St. Louis Downtown Airport at

Key findings

  • 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 9% worse than the national average
  • The pollution index in Lebanon is 20% 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 index544150
      Pollution index6,055,6403,347,2955,066,862

      Lebanon air quality information

      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

      Lebanon air quality information

      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

      City, StatePopulationAir Quality IndexNational Avg.
      Okawville, IL1,6204314%
      Germantown, IL1,1594314%
      Smithton, IL3,792548%
      Glen Carbon, IL12,782548%
      Maryville, IL7,837548%
      Lebanon, IL4,369548%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Valley Green, PA4,3684412%
      Archbold, OH4,3683922%
      California, MO4,3683922%
      Camanche, IA4,3684216%
      Castle Hills, TX4,367492%
      Lebanon, IL4,369548%
      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.