TODAY JUN02
TEMPERATURE78
HUMIDITY37
PRESSURE30.12
WIND COND.180 3.4
  • 8967Tue
  • 8970Wed50%
  • 8770Thu50%50%
  • 8970Fri30%30%
  • 8766Sat
daynightWeather update from Salem, Salem-Leckrone Airport at
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Smithboro 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°F38°F29°F3.3"
February24°F40°F31°F3.5"
March36°F55°F44°F3.9"
April45°F67°F55°F9.3"
May55°F75°F64°F5.6"
June64°F84°F73°F7.9"
July66°F86°F76°F5.0"
August65°F86°F74°F5.1"
September57°F80°F67°F6.0"
October46°F68°F56°F5.6"
November36°F54°F44°F3.6"
December28°F42°F34°F3.6"

Did you know?

  • The highest monthly average temperature in Smithboro for July is 76 degrees.
  • The lowest monthly average temperature in Smithboro for January is 29 degrees.
  • The most monthly precipitation in Smithboro occurs in April with 9.3 inches.
  • The air quality index in Smithboro is 26% better than the national average.
  • The pollution index in Smithboro is 87% better than the national average.

Compare Smithboro, IL Weather To Other Cities

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      Smithboro 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.
      IndexSmithboroIllinoisNational
      Air quality index374150
      Pollution index647,2803,347,2955,066,862

      Smithboro air quality information

      MeasurementTotal
      Days measured214
      Days with good air quality201
      Days with moderate air quality13
      Days w/ poor A.Q. for sensitive groups
      Days with unhealthy air quality

      Smithboro air quality information

      PollutantTotal
      Arsenic0.001%
      Benzene0.020%
      Carbon Tetrachloride0.000%
      Lead0.000%
      Mercury0.000%

      Average monthly Smithboro temperature with heat index

      Smithboro monthly precipitation with daily maximum

      Smithboro monthly snow depth with daily maximum

      Smithboro monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Vandalia, IL6,7583726%
      Coffeen, IL6083726%
      Mulberry Grove, IL6703726%
      Greenville, IL6,8333922%
      Keyesport, IL4433922%
      Smithboro, IL1713726%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Venetie, AK1713726%
      Julian, PA1713922%
      Bay Center, WA1712158%
      Ethelsville, AL1713040%
      Moscow, MD1713236%
      Smithboro, IL1713726%
      Source: The Smithboro, 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.