TODAY APR16
TEMPERATURE81
HUMIDITY53
PRESSURE101150
WIND COND.140 16.6
  • 8266Tue80%
  • 7854Wed
  • 7651Thu70%
  • 6448Fri40%30%
  • 6243Sat20%20%
daynightWeather update from St. Louis Lambert International Airport at
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Weather Quick Facts

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

Compare Brentwood, MO Weather

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      Brentwood 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"

      Brentwood 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.
      IndexBrentwoodMissouriNational
      Air quality index549742
      Pollution index8,473,0501,630,2552,726,193

      Brentwood 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

      Brentwood air quality information

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

      Average monthly Brentwood temperature with heat index

      Brentwood monthly precipitation with daily maximum

      Brentwood monthly snow depth with daily maximum

      Brentwood monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      St. Louis, MO304,709548.0%
      Cahokia, IL14,035548.0%
      Bella Villa, MO798548.0%
      Twin Oaks, MO520548.0%
      Venice, IL2,040548.0%
      Brentwood, MO7,986548.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Beckwith, ON7,986n/a 
      Brazeau County, AB7,986n/a 
      Makawao, HI7,9891570.0%
      Minnetrista, MN7,989468.0%
      Argyle, NS7,989n/a 
      Brentwood, MO7,986548.0%
      Source: The Brentwood, 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.