TODAY NOV21
TEMPERATURE36
HUMIDITY87
PRESSURE100340
WIND COND.230 5.4
  • 4238Fri100%90%
  • 4535Sat90%50%
  • 4637Sun30%
  • 5334Mon40%80%
  • 4128Tue80%30%
daynightWeather update from New Castle Municipal Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Mercer for July is 71.2 degrees
  • The lowest monthly average temperature in Mercer for January is 26.2 degrees
  • The most monthly precipitation in Mercer occurs in June with 7.2 inches
  • The air quality index in Mercer is 26% better than the national average
  • The pollution index in Mercer is 78% better than the national average

Compare Mercer, PA Weather

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      Mercer 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°F36°F26°F2.9"
      February17°F38°F27°F2.5"
      March27°F48°F36°F3.2"
      April38°F65°F51°F4.6"
      May47°F74°F61°F3.5"
      June56°F82°F68°F7.2"
      July59°F84°F71°F4.6"
      August57°F84°F70°F5.3"
      September52°F78°F64°F5.4"
      October44°F68°F54°F4.5"
      November31°F53°F41°F3.1"
      December26°F44°F35°F4.0"

      Mercer 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.
      IndexMercerPennsylvaniaNational
      Air quality index314542
      Pollution index601,9864,584,8052,726,193

      Mercer air quality

      MeasurementTotal
      Days measured361
      Days with good air quality356
      Days with moderate air quality5
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Air quality details

      PollutantTotal
      Arsenic0.001%
      Benzene0.010%
      Carbon Tetrachloride0.001%
      Lead0.010%
      Mercury0.001%

      Average monthly Mercer temperature with heat index

      Mercer monthly precipitation with daily maximum

      Mercer monthly snow depth with daily maximum

      Mercer monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Oakwood, PA2,1663138.0%
      Grove City, PA7,8293138.0%
      Slippery Rock, PA3,5263138.0%
      Volant, PA1003138.0%
      Stoneboro, PA7523138.0%
      Mercer, PA1,7553138.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Kaibito, AZ1,7554510.0%
      Portola, CA1,7554412.0%
      Prudenville, MI1,7553628.0%
      Decatur, MS1,7553628.0%
      Corvallis, MT1,7554020.0%
      Mercer, PA1,7553138.0%
      Source: The Mercer, PA 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.