TODAY DEC22
TEMPERATURE21
HUMIDITY65
PRESSURE102743.03
WIND COND. 9.3
  • 2716Sun
  • 4032Mon70%
  • 4029Tue80%
  • 4230
  • 4735Thu
daynightWeather update from Pittsburgh - Allegheny County Airport at
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Weather Quick Facts

  • The highest monthly average temperature in West Mifflin for July is 73.5 degrees
  • The lowest monthly average temperature in West Mifflin for January is 29.7 degrees
  • The most monthly precipitation in West Mifflin occurs in July with 5.1 inches
  • The air quality index in West Mifflin is 33% worse than the national average
  • The pollution index in West Mifflin is 67% better than the national average

Compare West Mifflin, PA Weather

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      West Mifflin 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
      January22°F38°F30°F3.2"
      February23°F39°F30°F2.2"
      March32°F52°F41°F3.4"
      April43°F65°F53°F3.4"
      May52°F74°F62°F4.2"
      June60°F81°F70°F5.1"
      July64°F84°F73°F5.1"
      August63°F82°F72°F4.1"
      September56°F77°F66°F3.1"
      October46°F65°F54°F3.8"
      November35°F54°F44°F2.8"
      December28°F43°F35°F3.7"

      West Mifflin 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.
      IndexWest MifflinPennsylvaniaNational
      Air quality index564542
      Pollution index889,8084,584,8052,726,193

      West Mifflin air quality

      MeasurementTotal
      Days measured365
      Days with good air quality129
      Days with moderate air quality220
      Days w/ poor A.Q. for sensitive groups12
      Days with unhealthy air quality4

      Air quality details

      PollutantTotal
      Arsenic0.001%
      Benzene0.020%
      Carbon Tetrachloride0.002%
      Lead0.030%
      Mercury0.030%

      Average monthly West Mifflin temperature with heat index

      West Mifflin monthly precipitation with daily maximum

      West Mifflin monthly snow depth with daily maximum

      West Mifflin monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      East McKeesport, PA1,8855612.0%
      Mount Oliver, PA3,3045612.0%
      Rankin, PA1,9485612.0%
      West Homestead, PA1,8075612.0%
      Braddock Hills, PA1,6355612.0%
      West Mifflin, PA19,7425612.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Niskayuna, NY19,7413726.0%
      Shafter, CA19,7436734.0%
      Sherwood, OR19,7453824.0%
      Mont-Saint-Hilaire, QC19,745n/a 
      Blythe, CA19,7471374.0%
      West Mifflin, PA19,7425612.0%
      Source: The West Mifflin, 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.