TODAY DEC22
TEMPERATURE41
HUMIDITY53
PRESSURE102710
WIND COND.180 20.5
  • 4738Mon
  • 4639Tue30%60%
  • 494230%20%
  • 5547Thu30%50%
  • 5847Fri40%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 Portage Des Sioux for July is 78.3 degrees
  • The lowest monthly average temperature in Portage Des Sioux for January is 30.6 degrees
  • The most monthly precipitation in Portage Des Sioux occurs in April with 5.1 inches
  • The air quality index in Portage Des Sioux is 28% worse than the national average
  • The pollution index in Portage Des Sioux is 225% worse than the national average

Compare Portage Des Sioux, MO Weather

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      Portage Des Sioux 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
      January22°F41°F31°F1.5"
      February23°F44°F33°F1.7"
      March36°F59°F46°F3.1"
      April46°F70°F57°F5.1"
      May56°F78°F66°F4.4"
      June66°F87°F76°F4.8"
      July68°F90°F78°F4.4"
      August66°F88°F77°F3.9"
      September58°F81°F69°F4.0"
      October46°F70°F57°F3.0"
      November36°F57°F45°F2.6"
      December27°F44°F35°F3.2"

      Portage Des Sioux 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.
      IndexPortage Des SiouxMissouriNational
      Air quality index549742
      Pollution index8,870,2301,630,2552,726,193

      Portage Des Sioux 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 Portage Des Sioux temperature with heat index

      Portage Des Sioux monthly precipitation with daily maximum

      Portage Des Sioux monthly snow depth with daily maximum

      Portage Des Sioux monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Elsah, IL701548.0%
      Brussels, IL113548.0%
      Alton, IL26,490548.0%
      Rosewood Heights, IL3,990548.0%
      West Alton, MO451548.0%
      Portage Des Sioux, MO305548.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Iron City, GA3053530.0%
      Deloit, IA3053530.0%
      Center Point, IN3054510.0%
      Newtown, IN3054216.0%
      Staunton, IN3054510.0%
      Portage Des Sioux, MO305548.0%
      Source: The Portage Des Sioux, 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.