TODAY DEC23
TEMPERATURE36
HUMIDITY67
PRESSURE102440
WIND COND.140 16.6
  • 5035Mon
  • 4438Tue20%60%
  • 464130%
  • 5447Thu50%
  • 5747Fri50%30%
daynightWeather update from St. Charles, St. Charles County Smartt Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Silex for August is 79.4 degrees
  • The lowest monthly average temperature in Silex for December is 31.7 degrees
  • The most monthly precipitation in Silex occurs in January with 9 inches
  • The air quality index in Silex is 28% worse than the national average
  • The pollution index in Silex is 10% better than the national average

Compare Silex, MO Weather

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      Silex 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
      January26°F41°F33°F9.0"
      February25°F43°F33°F4.8"
      March36°F60°F47°F3.9"
      April44°F68°F55°F4.3"
      May56°F80°F67°F4.3"
      June65°F87°F76°F5.8"
      July66°F89°F77°F3.9"
      August69°F91°F79°F4.6"
      September60°F85°F71°F4.9"
      October48°F71°F59°F3.7"
      November36°F58°F46°F7.6"
      December25°F40°F32°F2.5"

      Silex 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.
      IndexSilexMissouriNational
      Air quality index549742
      Pollution index2,458,1801,630,2552,726,193

      Silex 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
      Arsenic0.002%
      Benzene0.020%
      Carbon Tetrachloride0.001%
      Lead0.120%
      Mercury0.330%

      Average monthly Silex temperature with heat index

      Silex monthly precipitation with daily maximum

      Silex monthly snow depth with daily maximum

      Silex monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Truxton, MO1443824.0%
      Eolia, MO3054118.0%
      Paynesville, MO284118.0%
      Ashley, MO574118.0%
      St. Clement, MO864118.0%
      Silex, MO67548.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Zinc, AR673628.0%
      Washington Park, AZ676020.0%
      Beaver, IA673726.0%
      Curlew, IA671570.0%
      Kinross, IA673530.0%
      Silex, MO67548.0%
      Source: The Silex, MO 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.