TODAY JUN19
TEMPERATURE93
HUMIDITY46
PRESSURE29.89
WIND COND.230 15
  • 9172Wed40%60%
  • 8568Thu60%60%
  • 8265Fri60%60%
  • 8569Sat40%
  • 8770Sun50%30%
daynightWeather update from St. Louis, Lambert-St. Louis International Airport at

Brentwood Average Weather

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
January0°F73°F34°F3.2"
February5°F75°F35°F2.3"
March14°F83°F48°F3.7"
April23°F92°F57°F3.4"
May38°F93°F67°F4.7"
June53°F98°F77°F3.9"
July59°F103°F79°F4.1"
August54°F106°F79°F2.4"
September45°F95°F71°F4.3"
October28°F94°F58°F4.1"
November18°F82°F48°F2.8"
December3°F69°F35°F3.5"

Did you know?

  • The highest monthly average temperature in Brentwood for August is 79 degrees.
  • The lowest monthly average temperature in Brentwood for January is 34 degrees.
  • The most monthly precipitation in Brentwood occurs in May with 4.7 inches.
  • The air quality index in Brentwood is 20% worse than the national average.
  • The pollution index in Brentwood is 67% worse than the national average.

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Compare Brentwood, MO Weather To Other Cities

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 index609750
Pollution index8,473,0502,360,5665,066,862

Brentwood air quality information

MeasurementTotal
Days measured365
Days with good air quality99
Days with moderate air quality231
Days w/ poor A.Q. for sensitive groups33
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

City, StatePopulationAir Quality IndexNational Avg.
Chesterfield, MO47,7176020%
Cool Valley, MO1,2106020%
Creve Coeur, MO18,0726020%
Edmundson, MO8556020%
Flordell Hills, MO7656020%
Brentwood, MO8,0306020%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Willow Street, PA8,0304510%
Richland Hills, TX8,033548%
Mammoth Lakes, CA8,0354314%
Island Lake, IL8,0253530%
Grand Blanc, MI8,0393824%
Brentwood, MO8,0306020%
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.