TODAY DEC22
TEMPERATURE26
HUMIDITY84
PRESSURE102950
WIND COND.160 9.4
  • 4839Mon40%
  • 4641Tue40%60%
  • 494440%30%
  • 5549Thu40%60%
  • 5948Fri50%30%
daynightWeather update from St. Louis Downtown Airport at
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Weather Quick Facts

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

Compare St. Louis, MO Weather

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      Holly Hills 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"

      Holly Hills 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.
      IndexHolly HillsSt. LouisMissouri
      Air quality index545497
      Pollution index8,473,0508,473,0501,630,255

      Holly Hills 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
      Arsenic0.020%
      Benzene0.070%
      Carbon Tetrachloride0.020%
      Lead0.010%
      Mercury0.010%

      Average monthly Holly Hills temperature with heat index

      Holly Hills monthly precipitation with daily maximum

      Holly Hills monthly snow depth with daily maximum

      Holly Hills monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Richmond Heights, MO8,581548.0%
      Cahokia, IL14,035548.0%
      Affton, MO19,580548.0%
      Marlborough, MO2,727548.0%
      Collinsville, IL24,489548.0%
      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 Holly Hills, 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.