TODAY MAR28
TEMPERATURE66
HUMIDITY26
PRESSURE101860
WIND COND.220 16.6
  • 7458Fri20%
  • 7555Sat30%30%
  • 7962Sun40%40%
  • 7652Mon40%70%
  • 6140Tue40%
daynightWeather update from St. Louis Downtown Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Old North Saint Louis for July is 78.8 degrees
  • The lowest monthly average temperature in Old North Saint Louis for January is 32.5 degrees
  • The most monthly precipitation in Old North Saint Louis occurs in April with 5.3 inches
  • The air quality index in Old North Saint Louis is 28% worse than the national average
  • The pollution index in Old North Saint Louis is 211% worse than the national average

Compare St. Louis, MO Weather

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      Old North Saint Louis 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°F43°F32°F1.8"
      February26°F45°F34°F1.6"
      March37°F59°F47°F3.7"
      April47°F70°F58°F5.3"
      May56°F78°F67°F4.8"
      June65°F88°F76°F4.4"
      July68°F90°F79°F3.9"
      August66°F89°F77°F3.1"
      September58°F82°F69°F4.2"
      October47°F71°F58°F3.1"
      November36°F58°F46°F2.8"
      December29°F45°F36°F3.1"

      Old North Saint Louis 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.
      IndexOld North Saint LouisSt. LouisMissouri
      Air quality index545497
      Pollution index8,473,0508,473,0501,630,255

      Old North Saint Louis 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

      Old North Saint Louis air quality information

      PollutantTotal
      Arsenic0.020%
      Benzene0.070%
      Carbon Tetrachloride0.020%
      Lead0.010%
      Mercury0.010%

      Average monthly Old North Saint Louis temperature with heat index

      Old North Saint Louis monthly precipitation with daily maximum

      Old North Saint Louis monthly snow depth with daily maximum

      Old North Saint Louis monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Old Jamestown, MO19,602548.0%
      Maryville, IL7,962548.0%
      Wood River, IL10,149548.0%
      Caseyville, IL4,203548.0%
      Clayton, MO16,763548.0%
      St. Louis, MO304,709548.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      St. Paul, MN305,877468.0%
      Cincinnati, OH302,687548.0%
      Pittsburgh, PA301,2865612.0%
      Henderson, NV309,955548.0%
      Stockton, CA311,1034510.0%
      St. Louis, MO304,709548.0%
      Source: The Old North Saint Louis, St. Louis, 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.