TODAY AUG07
TEMPERATURE69
HUMIDITY90
PRESSURE30.14
WIND COND.360 7.6
  • 8569Sat30%
  • 8872Sun
  • 9274Mon
  • 9273Tue30%30%
  • 9173Wed40%
daynightWeather update from Teterboro, Teterboro Airport at

Key findings

  • The highest monthly average temperature in Demarest for July is 78 degrees
  • The lowest monthly average temperature in Demarest for January is 33 degrees
  • The most monthly precipitation in Demarest occurs in June with 5.3 inches
  • The air quality index in Demarest is 3% worse than the national average
  • The pollution index in Demarest is 39% worse than the national average

Compare Demarest, NJ Weather

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      Demarest 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°F4.2"
      February25°F43°F34°F3.6"
      March33°F52°F42°F3.9"
      April44°F66°F54°F4.4"
      May53°F75°F63°F4.9"
      June63°F84°F72°F5.3"
      July69°F89°F78°F4.5"
      August66°F86°F76°F5.0"
      September60°F81°F69°F3.5"
      October49°F69°F58°F4.8"
      November38°F58°F47°F3.1"
      December31°F47°F38°F5.0"

      Demarest 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.
      IndexDemarestNew JerseyNational
      Air quality index514550
      Pollution index7,043,2007,146,1325,066,862

      Demarest 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

      Demarest air quality information

      PollutantTotal
      Arsenic0.010%
      Benzene0.050%
      Carbon Tetrachloride0.020%
      Lead0.030%
      Mercury0.020%

      Average monthly Demarest temperature with heat index

      Demarest monthly precipitation with daily maximum

      Demarest monthly snow depth with daily maximum

      Demarest monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Pleasantville, NY7,1344314%
      Chappaqua, NY1,3284314%
      Rye Brook, NY9,5134314%
      Armonk, NY4,3034314%
      Thornwood, NY4,0064314%
      Demarest, NJ5,007512%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Auburn, IL5,0064020%
      Harlan, IA5,0084020%
      Kahaluu, HI5,0093040%
      Gardnertown, NY5,0043628%
      Columbus, WI5,0044020%
      Demarest, NJ5,007512%
      Source: The Demarest, 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.