TODAY OCT20
TEMPERATURE59
HUMIDITY81
PRESSURE29.75
WIND COND.230 6.9
  • 5134Sun20%
  • 5442Mon
  • 6141Tue
  • 5636Wed
  • 5335Thu
daynightWeather update from Trenton, Mercer County Airport at
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Monmouth Junction 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"

Did you know?

  • The highest monthly average temperature in Monmouth Junction for July is 77 degrees.
  • The lowest monthly average temperature in Monmouth Junction for January is 33 degrees.
  • The most monthly precipitation in Monmouth Junction occurs in June with 5.3 inches.
  • The air quality index in Monmouth Junction is 19% better than the national average.
  • The pollution index in Monmouth Junction is 34% better than the national average.

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Compare Monmouth Junction, NJ Weather To Other Cities

Monmouth Junction 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.
IndexMonmouth JunctionNew JerseyNational
Air quality index404550
Pollution index3,313,9207,146,1325,066,862

Monmouth Junction air quality information

MeasurementTotal
Days measured365
Days with good air quality257
Days with moderate air quality106
Days w/ poor A.Q. for sensitive groups2
Days with unhealthy air quality

Monmouth Junction air quality information

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

Average monthly Monmouth Junction temperature with heat index

Monmouth Junction monthly precipitation with daily maximum

Monmouth Junction monthly snow depth with daily maximum

Monmouth Junction monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Belle Mead, NJ1964020%
Bradley Gardens, NJ14,4134020%
Englishtown, NJ2,1894020%
Franklin Park, NJ15,4544020%
Hamilton Square, NJ13,2654020%
Monmouth Junction, NJ3,1994020%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
North Shore, CA3,199476%
Blissfield, MI3,2003824%
Warrior, AL3,19850= 100
Terra Bella, CA3,2017448%
Fairmount, TN3,1974412%
Monmouth Junction, NJ3,1994020%
Source: The Monmouth Junction, 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.