TODAY MAR28
TEMPERATURE53
HUMIDITY42
PRESSURE101800
WIND COND.290 18.4
  • 6452Fri80%
  • 6438Sat40%
  • 5344Sun20%
  • 5741Mon
  • 5233Tue
daynightWeather update from Joliet Regional Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Wilmington for July is 74.2 degrees
  • The lowest monthly average temperature in Wilmington for January is 25.3 degrees
  • The most monthly precipitation in Wilmington occurs in August with 6.8 inches
  • The air quality index in Wilmington is 100% better than the national average
  • The pollution index in Wilmington is 36% better than the national average

Compare Wilmington, IL Weather

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      Wilmington 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
      January18°F34°F25°F2.5"
      February19°F36°F27°F2.8"
      March31°F50°F39°F4.5"
      April41°F63°F51°F4.9"
      May50°F73°F61°F4.7"
      June60°F83°F71°F5.4"
      July64°F85°F74°F5.7"
      August62°F83°F72°F6.8"
      September55°F77°F65°F5.4"
      October44°F64°F53°F5.7"
      November33°F51°F41°F4.9"
      December23°F37°F30°F3.7"

      Wilmington 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.
      IndexWilmingtonIllinoisNational
      Air quality index04142
      Pollution index1,736,9303,148,6942,726,193

      Wilmington air quality information

      MeasurementTotal
      Days measured335
      Days with good air quality334
      Days with moderate air quality1
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Wilmington air quality information

      PollutantTotal
      Arsenic0.004%
      Benzene0.040%
      Carbon Tetrachloride0.000%
      Lead0.001%
      Mercury0.001%

      Average monthly Wilmington temperature with heat index

      Wilmington monthly precipitation with daily maximum

      Wilmington monthly snow depth with daily maximum

      Wilmington monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Braceville, IL8860100.0%
      Diamond, IL2,7860100.0%
      Godley, IL6910100.0%
      South Wilmington, IL7020100.0%
      Channahon, IL13,2810100.0%
      Wilmington, IL5,8830100.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Villa Park, CA5,8838978.0%
      Glendale, MO5,881548.0%
      Paulsboro, NJ5,881512.0%
      Attalla, AL5,8854314.0%
      South Lebanon, OH5,885548.0%
      Wilmington, IL5,8830100.0%
      Source: The Wilmington, 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.