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Dellwood 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
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"

Did you know?

  • The highest monthly average temperature in Dellwood for July is 81 degrees.
  • The lowest monthly average temperature in Dellwood for January is 33 degrees.
  • The most monthly precipitation in Dellwood occurs in April with 5.4 inches.
  • The air quality index in Dellwood is 20% worse than the national average.
  • The pollution index in Dellwood is 67% worse than the national average.

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Compare Dellwood, MO Weather To Other Cities

Dellwood 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.
IndexDellwoodMissouriNational
Air quality index609750
Pollution index8,473,0502,360,5665,066,862

Dellwood 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

Dellwood air quality information

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

Average monthly Dellwood temperature with heat index

Dellwood monthly precipitation with daily maximum

Dellwood monthly snow depth with daily maximum

Dellwood monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Maryland Heights, MO27,3596020%
Norwood Court, MO8296020%
Overland, MO15,9326020%
Pine Lawn, MO3,4236020%
Rock Hill, MO4,6286020%
Dellwood, MO5,0206020%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
North Fond du Lac, WI5,0203628%
Arnold, PA5,0195612%
Buellton, CA5,0214412%
Falmouth, VA5,018492%
Kutztown, PA5,0234510%
Dellwood, MO5,0206020%
Source: The Dellwood, 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.