TODAY MAR28
TEMPERATURE45
HUMIDITY86
PRESSURE101080
WIND COND.340 13
  • 5536Fri
  • 5742Sat
  • 5939Sun30%
  • 5341Mon30%40%
  • 4940Tue80%70%
daynightWeather update from White Plains - Westchester County Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Port Chester for July is 74.5 degrees
  • The lowest monthly average temperature in Port Chester for January is 30.4 degrees
  • The most monthly precipitation in Port Chester occurs in June with 5.1 inches
  • The air quality index in Port Chester is 21% worse than the national average
  • The pollution index in Port Chester is 522% worse than the national average

Compare Port Chester, NY Weather

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      Port Chester 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
      January23°F39°F30°F3.0"
      February23°F40°F31°F2.6"
      March30°F49°F39°F3.5"
      April41°F62°F50°F4.2"
      May50°F71°F60°F4.2"
      June60°F79°F69°F5.1"
      July66°F84°F74°F4.4"
      August64°F82°F72°F4.2"
      September57°F77°F66°F4.3"
      October47°F65°F55°F5.1"
      November37°F54°F45°F3.1"
      December29°F44°F36°F4.5"

      Port Chester 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.
      IndexPort ChesterNew YorkNational
      Air quality index514342
      Pollution index16,950,7006,179,2752,726,193

      Port Chester 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

      Port Chester air quality information

      PollutantTotal
      Arsenic0.030%
      Benzene0.140%
      Carbon Tetrachloride0.070%
      Lead0.080%
      Mercury0.030%

      Average monthly Port Chester temperature with heat index

      Port Chester monthly precipitation with daily maximum

      Port Chester monthly snow depth with daily maximum

      Port Chester monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Croton-on-Hudson, NY8,1213628.0%
      Byram, CT4,8554314.0%
      Greenwich, CT12,9674314.0%
      Stamford, CT130,0574314.0%
      Chappaqua, NY2,6284314.0%
      Port Chester, NY29,210512.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Niles, IL29,1985510.0%
      Russellville, AR29,2273824.0%
      Laplace, LA29,2323040.0%
      Central, LA29,2354510.0%
      Raytown, MO29,176476.0%
      Port Chester, NY29,210512.0%
      Source: The Port Chester, NY 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.