TODAY NOV21
TEMPERATURE48
HUMIDITY96
PRESSURE99870
WIND COND.320 9.4
  • 4434Fri40%40%
  • 5038Sat20%
  • 5234Sun
  • 5642Mon
  • 5835Tue
daynightWeather update from Somerville, Somerset Airport at
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Weather Quick Facts

  • The highest monthly average temperature in South River for July is 78.1 degrees
  • The lowest monthly average temperature in South River for February is 32.4 degrees
  • The most monthly precipitation in South River occurs in May with 9.9 inches
  • The air quality index in South River is 3% better than the national average
  • The pollution index in South River is 371% worse than the national average

Compare South River, NJ Weather

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      South River 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
      January26°F42°F34°F6.3"
      February24°F42°F32°F4.9"
      March31°F50°F40°F7.3"
      April46°F67°F55°F5.0"
      May56°F76°F65°F9.9"
      June64°F83°F73°F8.3"
      July71°F87°F78°F8.3"
      August67°F84°F75°F7.8"
      September61°F80°F70°F4.9"
      October54°F72°F62°F6.3"
      November38°F56°F46°F5.9"
      December33°F46°F39°F5.8"

      South River 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.
      IndexSouth RiverNew JerseyNational
      Air quality index414542
      Pollution index12,837,2007,246,8912,726,193

      South River 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
      Arsenic0.010%
      Benzene0.110%
      Carbon Tetrachloride0.050%
      Lead0.020%
      Mercury0.230%

      Average monthly South River temperature with heat index

      South River monthly precipitation with daily maximum

      South River monthly snow depth with daily maximum

      South River monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Old Bridge, NJ27,8364118.0%
      East Rocky Hill, NJ3354118.0%
      Heathcote, NJ7,3894118.0%
      Pleasant Plains, NJ6274118.0%
      Bound Brook, NJ10,2544118.0%
      South River, NJ15,8744118.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      River Falls, WI15,8703726.0%
      Horsham, PA15,864512.0%
      Bellmore, NY15,887512.0%
      Discovery Bay, CA15,9044510.0%
      Aberdeen, MD15,904468.0%
      South River, NJ15,8744118.0%
      Source: The South River, 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.