TODAY MAR19
TEMPERATURE30
HUMIDITY55
PRESSURE102410
WIND COND.270 7.6
  • 6537Tue
  • 5332Wed
  • 4738Thu
  • 5937Fri20%20%
  • 5439Sat
daynightWeather update from St. Louis Regional Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Glen Carbon for July is 76.5 degrees
  • The lowest monthly average temperature in Glen Carbon for January is 31.2 degrees
  • The most monthly precipitation in Glen Carbon occurs in July with 7.3 inches
  • The air quality index in Glen Carbon is 28% worse than the national average
  • The pollution index in Glen Carbon is 122% worse than the national average

Compare Glen Carbon, IL Weather

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      Glen Carbon 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
      January24°F41°F31°F3.4"
      February25°F43°F33°F3.7"
      March38°F57°F46°F3.1"
      April47°F68°F56°F6.6"
      May56°F76°F65°F6.1"
      June65°F85°F75°F3.5"
      July67°F87°F77°F7.3"
      August66°F86°F75°F6.8"
      September58°F80°F68°F4.4"
      October47°F68°F57°F6.7"
      November36°F56°F45°F4.9"
      December28°F43°F35°F6.3"

      Glen Carbon 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.
      IndexGlen CarbonIllinoisNational
      Air quality index544142
      Pollution index6,055,6403,148,6942,726,193

      Glen Carbon 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

      Glen Carbon air quality information

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

      Average monthly Glen Carbon temperature with heat index

      Glen Carbon monthly precipitation with daily maximum

      Glen Carbon monthly snow depth with daily maximum

      Glen Carbon monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Castle Point, MO2,390548.0%
      Spanish Lake, MO17,682548.0%
      Lebanon, IL4,443548.0%
      Pontoon Beach, IL5,822548.0%
      Livingston, IL789548.0%
      Glen Carbon, IL12,468548.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Marysville, CA12,4674412.0%
      Choctaw, OK12,467484.0%
      Lakeland South, WA12,4674510.0%
      Bonita, CA12,4706428.0%
      Boone, IA12,4703726.0%
      Glen Carbon, IL12,468548.0%
      Source: The Glen Carbon, 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.