TODAY NOV24
TEMPERATURE52
HUMIDITY46
PRESSURE101730
WIND COND.200 5.4
  • 6654Sun30%
  • 5929Mon20%
  • 4335Tue
  • 4635Wed60%
  • 422940%30%
daynightWeather update from St. Louis Lambert International Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Maryland Heights for July is 80.9 degrees
  • The lowest monthly average temperature in Maryland Heights for January is 33.1 degrees
  • The most monthly precipitation in Maryland Heights occurs in April with 5.4 inches
  • The air quality index in Maryland Heights is 28% worse than the national average
  • The pollution index in Maryland Heights is 225% worse than the national average

Compare Maryland Heights, MO Weather

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      Maryland Heights 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°F45°F33°F2.4"
      February25°F48°F35°F2.2"
      March37°F61°F48°F3.6"
      April47°F72°F59°F5.4"
      May57°F80°F68°F4.6"
      June67°F89°F78°F5.2"
      July70°F92°F81°F4.2"
      August69°F91°F79°F3.6"
      September61°F84°F72°F4.3"
      October48°F72°F60°F3.4"
      November37°F60°F48°F3.4"
      December27°F47°F37°F3.5"

      Maryland Heights 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.
      IndexMaryland HeightsMissouriNational
      Air quality index549742
      Pollution index8,870,2301,630,2552,726,193

      Maryland Heights 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 Maryland Heights temperature with heat index

      Maryland Heights monthly precipitation with daily maximum

      Maryland Heights monthly snow depth with daily maximum

      Maryland Heights monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      O'Fallon, MO88,132548.0%
      Portage Des Sioux, MO305548.0%
      Concord, MO18,521548.0%
      Frontenac, MO3,538548.0%
      Lemay, MO16,565548.0%
      Maryland Heights, MO26,996548.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      West Chicago, IL26,9985510.0%
      New London, CT27,0013726.0%
      Mount Pleasant, WI27,0083922.0%
      Bristol, TN26,9734510.0%
      Norco, CA27,0218978.0%
      Maryland Heights, MO26,996548.0%
      Source: The Maryland Heights, 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.