TODAY AUG14
TEMPERATURE74
HUMIDITY94
PRESSURE29.95
WIND COND.220 8.1
  • 8069Wed70%70%
  • 8668Thu20%20%
  • 8868Fri20%50%
  • 8768Sat20%20%
  • 8669Sun30%
daynightWeather update from St. Charles, St. Charles County Smartt Airport at

Old Monroe 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
January26°F41°F33°F9.0"
February25°F43°F33°F4.8"
March36°F60°F47°F3.9"
April44°F68°F55°F4.3"
May56°F80°F67°F4.3"
June65°F87°F76°F5.8"
July66°F89°F77°F3.9"
August69°F91°F79°F4.6"
September60°F85°F71°F4.9"
October48°F71°F59°F3.7"
November36°F58°F46°F7.6"
December25°F40°F32°F2.5"

Did you know?

  • The highest monthly average temperature in Old Monroe for August is 79 degrees.
  • The lowest monthly average temperature in Old Monroe for December is 32 degrees.
  • The most monthly precipitation in Old Monroe occurs in January with 9 inches.
  • The air quality index in Old Monroe is 20% worse than the national average.
  • The pollution index in Old Monroe is 39% better than the national average.

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Compare Old Monroe, MO Weather To Other Cities

Old Monroe 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.
IndexOld MonroeMissouriNational
Air quality index609750
Pollution index3,042,5302,360,5665,066,862

Old Monroe 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

Old Monroe air quality information

PollutantTotal
Arsenic0.010%
Benzene0.040%
Carbon Tetrachloride0.010%
Lead0.010%
Mercury0.001%

Average monthly Old Monroe temperature with heat index

Old Monroe monthly precipitation with daily maximum

Old Monroe monthly snow depth with daily maximum

Old Monroe monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Chain of Rocks, MO1006020%
Foley, MO1016020%
Lake St. Louis, MO15,1506020%
St. Paul, MO2,0536020%
Winfield, MO1,7156020%
Old Monroe, MO2016020%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Burnside, PA2013334%
Westboro, MO2014510%
Acequia, ID2011374%
Columbus, ND2014118%
Cottonwood, TX2014020%
Old Monroe, MO2016020%
Source: The Old Monroe, 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.