TODAY MAR19
TEMPERATURE36
HUMIDITY50
PRESSURE100750
WIND COND.290 16.6
  • 4634Tue
  • 5329Wed40%
  • 4324Thu
  • 4533Fri40%
  • 5030Sat50%30%
daynightWeather update from Caldwell, Essex County Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Riverdale for July is 74.8 degrees
  • The lowest monthly average temperature in Riverdale for February is 28.9 degrees
  • The most monthly precipitation in Riverdale occurs in October with 15.6 inches
  • The air quality index in Riverdale is 21% worse than the national average
  • The pollution index in Riverdale is 7% better than the national average

Compare Riverdale, NJ Weather

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      Riverdale 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
      January24°F40°F31°F5.0"
      February21°F38°F29°F3.2"
      March27°F49°F37°F8.8"
      April39°F62°F50°F10.1"
      May49°F73°F61°F2.7"
      June61°F83°F72°F6.6"
      July65°F85°F75°F8.4"
      August65°F86°F75°F7.9"
      September56°F81°F68°F2.2"
      October49°F68°F58°F15.6"
      November34°F55°F44°F6.5"
      December26°F40°F33°F8.0"

      Riverdale 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.
      IndexRiverdaleNew JerseyNational
      Air quality index514542
      Pollution index2,548,9307,246,8912,726,193

      Riverdale air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality169
      Days with moderate air quality180
      Days w/ poor A.Q. for sensitive groups16
      Days with unhealthy air quality0

      Riverdale air quality information

      PollutantTotal
      Arsenic0.003%
      Benzene0.020%
      Carbon Tetrachloride0.003%
      Lead0.020%
      Mercury0.002%

      Average monthly Riverdale temperature with heat index

      Riverdale monthly precipitation with daily maximum

      Riverdale monthly snow depth with daily maximum

      Riverdale monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Wharton, NJ6,4583432.0%
      Lake Telemark, NJ1,1333432.0%
      Ogdensburg, NJ2,1643432.0%
      Franklin, NJ4,7373432.0%
      Vernon Center, NJ1,4623432.0%
      Riverdale, NJ4,179512.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Gordon Heights, NY4,1794314.0%
      East Hampton North, NY4,1803726.0%
      Swan River, MB4,177n/a 
      Carlisle, IA4,1813922.0%
      Jersey Shore, PA4,1813530.0%
      Riverdale, NJ4,179512.0%
      Source: The Riverdale, 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.