TODAY DEC22
TEMPERATURE20
HUMIDITY47
PRESSURE103120
WIND COND.340 13
  • 2820Mon
  • 3823Tue30%
  • 3720
  • 3823Thu
  • 4025Fri
daynightWeather update from Trenton, Mercer County Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Pennington for July is 77 degrees
  • The lowest monthly average temperature in Pennington for January is 32.7 degrees
  • The most monthly precipitation in Pennington occurs in June with 5.3 inches
  • The air quality index in Pennington is 3% better than the national average
  • The pollution index in Pennington is 22% worse than the national average

Compare Pennington, NJ Weather

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      Pennington 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"

      Pennington 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.
      IndexPenningtonNew JerseyNational
      Air quality index414542
      Pollution index3,313,9207,246,8912,726,193

      Pennington air quality

      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

      Air quality details

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

      Average monthly Pennington temperature with heat index

      Pennington monthly precipitation with daily maximum

      Pennington monthly snow depth with daily maximum

      Pennington monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Millstone, NJ5734118.0%
      Groveville, NJ2,9534118.0%
      Levittown, PA49,9214118.0%
      Hamilton Square, NJ11,5264118.0%
      Plainsboro Center, NJ2,7154118.0%
      Pennington, NJ2,5534118.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      West Bishop, CA2,553476.0%
      Odell, OR2,5532354.0%
      Deerfield, WI2,5533922.0%
      East Williston, NY2,552512.0%
      Williamsburg, OH2,552548.0%
      Pennington, NJ2,5534118.0%
      Source: The Pennington, 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.