TODAY MAR19
TEMPERATURE36
HUMIDITY50
PRESSURE100980
WIND COND.280 24.1
  • 4839
  • 5531Wed20%
  • 4628Thu
  • 4838Fri40%
  • 5432Sat70%40%
daynightWeather update from Philadelphia, Philadelphia International Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Philadelphia for July is 79.2 degrees
  • The lowest monthly average temperature in Philadelphia for January is 34.4 degrees
  • The most monthly precipitation in Philadelphia occurs in August with 5.8 inches
  • The air quality index in Philadelphia is 21% worse than the national average
  • The pollution index in Philadelphia is 358% worse than the national average

Compare Philadelphia, PA Weather

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      Philadelphia 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
      January26°F44°F34°F3.3"
      February26°F46°F35°F2.6"
      March33°F56°F44°F3.6"
      April44°F68°F56°F4.0"
      May54°F77°F65°F3.9"
      June64°F86°F74°F4.8"
      July70°F90°F79°F5.0"
      August68°F87°F77°F5.8"
      September61°F82°F71°F4.3"
      October50°F70°F59°F4.7"
      November39°F59°F48°F2.8"
      December31°F49°F40°F4.7"

      Philadelphia 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.
      IndexPhiladelphiaPennsylvaniaNational
      Air quality index514542
      Pollution index12,485,1004,584,8052,726,193

      Philadelphia air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality180
      Days with moderate air quality169
      Days w/ poor A.Q. for sensitive groups16
      Days with unhealthy air quality0

      Philadelphia air quality information

      PollutantTotal
      Arsenic0.020%
      Benzene0.100%
      Carbon Tetrachloride0.100%
      Lead0.120%
      Mercury0.010%

      Average monthly Philadelphia temperature with heat index

      Philadelphia monthly precipitation with daily maximum

      Philadelphia monthly snow depth with daily maximum

      Philadelphia monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Hulmeville, PA1,0014118.0%
      Langhorne Manor, PA1,4914118.0%
      Trevose, PA3,4604118.0%
      Penndel, PA2,9284118.0%
      Croydon, PA9,6934118.0%
      Philadelphia, PA1,581,531512.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      San Antonio, TX1,529,133492.0%
      Phoenix, AZ1,658,4227448.0%
      San Diego, CA1,414,5456428.0%
      Calgary, AB1,371,990n/a 
      Montréal, QC1,811,008n/a 
      Philadelphia, PA1,581,531512.0%
      Source: The Philadelphia, 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.