TODAY NOV21
TEMPERATURE41
HUMIDITY
PRESSURE
WIND COND.
  • 4631Fri
  • 5237Sat
  • 6348Sun30%
  • 5728Mon30%
  • 4329Tue
daynightWeather update from St. Louis Regional Airport at
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Weather Quick Facts

  • The highest monthly average temperature in South Roxana for July is 76.5 degrees
  • The lowest monthly average temperature in South Roxana for January is 31.2 degrees
  • The most monthly precipitation in South Roxana occurs in July with 7.3 inches
  • The air quality index in South Roxana is 28% worse than the national average
  • The pollution index in South Roxana is 211% worse than the national average

Compare South Roxana, IL Weather

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      South Roxana 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"

      South Roxana 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.
      IndexSouth RoxanaIllinoisNational
      Air quality index544142
      Pollution index8,473,0503,148,6942,726,193

      South Roxana 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
      Arsenic0.020%
      Benzene0.070%
      Carbon Tetrachloride0.020%
      Lead0.010%
      Mercury0.010%

      Average monthly South Roxana temperature with heat index

      South Roxana monthly precipitation with daily maximum

      South Roxana monthly snow depth with daily maximum

      South Roxana monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Pasadena Hills, MO1,123548.0%
      Worden, IL875548.0%
      Alton, IL26,490548.0%
      Glen Carbon, IL12,468548.0%
      Mitchell, IL1,233548.0%
      South Roxana, IL2,304548.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Rockville, IN2,3044510.0%
      Johnsonburg, PA2,3043530.0%
      Maskinongé, QC2,304n/a 
      Trenton, GA2,303468.0%
      Lyman, MS2,3034216.0%
      South Roxana, IL2,304548.0%
      Source: The South Roxana, 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.