TODAY DEC12
TEMPERATURE45
HUMIDITY60
PRESSURE29.91
WIND COND. 4.7
  • 4843Thu60%80%
  • 4737Fri70%70%
  • 4730Sat
  • 4931Sun
  • 4530Mon
daynightWeather update from St. Louis Downtown Airport at

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Trenton 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
January28°F43°F34°F9.8"
February26°F45°F34°F4.7"
March38°F60°F48°F2.9"
April45°F68°F56°F5.6"
May56°F79°F67°F3.7"
June65°F88°F76°F7.6"
July67°F88°F77°F12.3"
August70°F93°F80°F7.2"
September61°F85°F72°F16.1"
October49°F72°F59°F7.5"
November38°F59°F47°F11.9"
December27°F42°F33°F2.9"

Did you know?

  • The highest monthly average temperature in Trenton for August is 80 degrees.
  • The lowest monthly average temperature in Trenton for December is 33 degrees.
  • The most monthly precipitation in Trenton occurs in September with 16.1 inches.
  • The air quality index in Trenton is 20% worse than the national average.
  • The pollution index in Trenton is 87% better than the national average.

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Compare Trenton, IL Weather To Other Cities

Trenton 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.
IndexTrentonIllinoisNational
Air quality index604150
Pollution index647,2803,347,2955,066,862

Trenton 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

Trenton air quality information

PollutantTotal
Arsenic0.001%
Benzene0.020%
Carbon Tetrachloride0.000%
Lead0.000%
Mercury0.000%

Average monthly Trenton temperature with heat index

Trenton monthly precipitation with daily maximum

Trenton monthly snow depth with daily maximum

Trenton monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Bartelso, IL6193922%
Addieville, IL3033922%
Beckemeyer, IL9813922%
Okawville, IL1,6203922%
Breese, IL4,5903922%
Trenton, IL2,6806020%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Dennis Port, MA2,6803334%
Provincetown, MA2,6803334%
Clinton, NJ2,6793922%
Black Canyon City, AZ2,6817448%
Sisseton, SD2,6823628%
Trenton, IL2,6806020%
Source: The Trenton, IL 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.