TODAY NOV21
TEMPERATURE30
HUMIDITY100
PRESSURE100033.92
WIND COND.
  • 3829Fri90%70%
  • 4333Sat90%80%
  • 4230Sun60%
  • 4934Mon80%
  • 4127Tue60%40%
daynightWeather update from Cattaraugus County-Olean Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Belfast for August is 68.7 degrees
  • The lowest monthly average temperature in Belfast for February is 20.3 degrees
  • The most monthly precipitation in Belfast occurs in August with 9.4 inches
  • The air quality index in Belfast is 7% better than the national average
  • The pollution index in Belfast is 6% worse than the national average

Compare Belfast, NY Weather

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      Belfast 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
      January17°F32°F24°F4.1"
      February14°F28°F20°F1.7"
      March21°F38°F28°F2.3"
      April34°F54°F43°F3.8"
      May44°F67°F55°F1.7"
      June56°F78°F67°F5.2"
      July58°F79°F68°F4.2"
      August59°F81°F69°F9.4"
      September52°F74°F62°F5.5"
      October46°F62°F53°F5.2"
      November32°F48°F39°F5.5"
      December21°F32°F26°F3.0"

      Belfast 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.
      IndexBelfastNew YorkNational
      Air quality index394342
      Pollution index2,885,1406,179,2752,726,193

      Belfast air quality

      MeasurementTotal
      Days measured365
      Days with good air quality308
      Days with moderate air quality57
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Air quality details

      PollutantTotal
      Arsenic0.004%
      Benzene0.030%
      Carbon Tetrachloride0.005%
      Lead0.010%
      Mercury0.002%

      Average monthly Belfast temperature with heat index

      Belfast monthly precipitation with daily maximum

      Belfast monthly snow depth with daily maximum

      Belfast monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Angelica, NY7153530.0%
      Wellsville, NY4,3973530.0%
      Scio, NY6883530.0%
      Friendship, NY8543530.0%
      Belmont, NY7973530.0%
      Belfast, NY7523922.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Woodhull, IL752468.0%
      Fostoria, MI7523824.0%
      Chippewa Lake, OH7524314.0%
      Rossiter, PA7523334.0%
      Stoneboro, PA7523138.0%
      Belfast, NY7523922.0%
      Source: The Belfast, 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.