TODAY NOV22
TEMPERATURE37
HUMIDITY
PRESSURE
WIND COND.230 18.4
  • 3633Fri90%80%
  • 4737Sat
  • 4831Sun
  • 5240Mon
  • 5332Tue40%
daynightWeather update from Morristown Municipal at
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Weather Quick Facts

  • The highest monthly average temperature in Mountain Lakes for July is 74.8 degrees
  • The lowest monthly average temperature in Mountain Lakes for February is 28.9 degrees
  • The most monthly precipitation in Mountain Lakes occurs in October with 15.6 inches
  • The air quality index in Mountain Lakes is 21% worse than the national average
  • The pollution index in Mountain Lakes is 200% worse than the national average

Compare Mountain Lakes, NJ Weather

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      Mountain Lakes 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"

      Mountain Lakes 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.
      IndexMountain LakesNew JerseyNational
      Air quality index514542
      Pollution index8,169,9307,246,8912,726,193

      Mountain Lakes air quality

      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

      Air quality details

      PollutantTotal
      Arsenic0.010%
      Benzene0.070%
      Carbon Tetrachloride0.030%
      Lead0.020%
      Mercury0.010%

      Average monthly Mountain Lakes temperature with heat index

      Mountain Lakes monthly precipitation with daily maximum

      Mountain Lakes monthly snow depth with daily maximum

      Mountain Lakes monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Mendham, NJ4,8803432.0%
      Chester, NJ1,5143432.0%
      Lake Mohawk, NJ9,1483432.0%
      Succasunna, NJ9,3673432.0%
      Peapack and Gladstone, NJ2,5823432.0%
      Mountain Lakes, NJ4,249512.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Chatsworth, GA4,2474314.0%
      Thiells, NY4,2473628.0%
      Rivière-Rouge, QC4,247n/a 
      Pantops, VA4,2464020.0%
      Pecan Acres, TX4,2453334.0%
      Mountain Lakes, NJ4,249512.0%
      Source: The Mountain Lakes, 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.