TODAY NOV05
TEMPERATURE68
HUMIDITY87
PRESSURE100780
WIND COND.140 14.8
  • 6843Tue90%
  • 6044Wed
  • 6142Thu
  • 6147Fri20%20%
  • 6350Sat50%70%
daynightWeather update from St. Charles, St. Charles County Smartt Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Otterville for August is 79.4 degrees
  • The lowest monthly average temperature in Otterville for December is 31.7 degrees
  • The most monthly precipitation in Otterville occurs in January with 9 inches
  • The air quality index in Otterville is 28% worse than the national average
  • The pollution index in Otterville is 225% worse than the national average

Compare Otterville, IL Weather

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      Otterville 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"

      Otterville 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.
      IndexOttervilleIllinoisNational
      Air quality index544142
      Pollution index8,870,2303,148,6942,726,193

      Otterville 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
      Arsenic0.180%
      Benzene0.060%
      Carbon Tetrachloride0.020%
      Lead0.030%
      Mercury0.120%

      Average monthly Otterville temperature with heat index

      Otterville monthly precipitation with daily maximum

      Otterville monthly snow depth with daily maximum

      Otterville monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Jerseyville, IL7,860548.0%
      Brighton, IL2,315548.0%
      Brussels, IL113548.0%
      West Alton, MO451548.0%
      Fidelity, IL172548.0%
      Otterville, IL195548.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Emerson, AR1953530.0%
      Menifee, AR1954510.0%
      Big Bend, CA1954216.0%
      Gold Hill, CO195476.0%
      Woolsey, GA195524.0%
      Otterville, IL195548.0%
      Source: The Otterville, 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.