TODAY APR18
TEMPERATURE47
HUMIDITY68
PRESSURE29.85
WIND COND.
  • 6746Mon20%30%
  • 7452Tue
  • 6937Wed50%70%
  • 5438Thu
  • 6345Fri
daynightWeather update from Trenton, Mercer County Airport at

Key findings

  • The highest monthly average temperature in Trenton for July is 77 degrees
  • The lowest monthly average temperature in Trenton for January is 32.7 degrees
  • The most monthly precipitation in Trenton occurs in June with 5.3 inches
  • The air quality index in Trenton is 18% better than the national average
  • The pollution index in Trenton is 35% better than the national average

Compare Trenton, NJ Weather

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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
      January25°F42°F33°F3.3"
      February25°F43°F34°F2.4"
      March33°F53°F42°F3.4"
      April43°F66°F54°F3.8"
      May52°F75°F63°F3.9"
      June62°F83°F72°F5.3"
      July67°F88°F77°F5.1"
      August65°F85°F75°F4.7"
      September59°F79°F68°F3.5"
      October48°F68°F57°F4.2"
      November37°F57°F46°F2.9"
      December31°F47°F38°F4.3"

      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.
      IndexTrentonNew JerseyNational
      Air quality index414550
      Pollution index3,313,9207,146,1325,066,862

      Trenton air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality280
      Days with moderate air quality83
      Days w/ poor A.Q. for sensitive groups2
      Days with unhealthy air quality0

      Trenton air quality information

      PollutantTotal
      Arsenic0.350%
      Benzene0.020%
      Carbon Tetrachloride0.004%
      Lead0.350%
      Mercury0.340%

      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.
      Griggstown, NJ7924118%
      Kingston, NJ1,3834118%
      Rocky Hill, NJ6184118%
      New Hope, PA2,3854118%
      Fieldsboro, NJ6294118%
      Trenton, NJ84,5594118%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Riverview, FL84,5904314%
      Bellingham, WA84,4623432%
      Champaign, IL84,6724216%
      Bend, OR84,4162060%
      Edinburg, TX84,3994216%
      Trenton, NJ84,5594118%
      Source: The Trenton, NJ 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.