TODAY MAR29
TEMPERATURE65
HUMIDITY25
PRESSURE101800
WIND COND.250 16.6
  • 7458Fri30%
  • 7555Sat30%40%
  • 7961Sun40%40%
  • 7651Mon40%70%
  • 6139Tue40%
daynightWeather update from St. Louis Lambert International Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Cool Valley for July is 80.9 degrees
  • The lowest monthly average temperature in Cool Valley for January is 33.1 degrees
  • The most monthly precipitation in Cool Valley occurs in April with 5.4 inches
  • The air quality index in Cool Valley is 28% worse than the national average
  • The pollution index in Cool Valley is 211% worse than the national average

Compare Cool Valley, MO Weather

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      Cool Valley 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"

      Cool Valley 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.
      IndexCool ValleyMissouriNational
      Air quality index549742
      Pollution index8,473,0501,630,2552,726,193

      Cool Valley 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

      Cool Valley air quality information

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

      Average monthly Cool Valley temperature with heat index

      Cool Valley monthly precipitation with daily maximum

      Cool Valley monthly snow depth with daily maximum

      Cool Valley monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Florissant, MO51,220548.0%
      East Alton, IL6,021548.0%
      Roxana, IL1,570548.0%
      Portage Des Sioux, MO305548.0%
      Fairmont City, IL2,082548.0%
      Cool Valley, MO1,116548.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Wagon Wheel, AZ1,1164412.0%
      Livermore, KY1,1164314.0%
      Tom Bean, TX1,116325550.0%
      Division No. 4, Subd. B, NL1,116n/a 
      New Market, AL1,1154412.0%
      Cool Valley, MO1,116548.0%
      Source: The Cool Valley, 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.