Philadelphia, PA Weather - Forecast & Monthly Averages

TEMPERATURE	20
HUMIDITY	45
PRESSURE	102810
WIND COND.	310 18.4

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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

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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.
Month	Temp. _(min)	Temp. _(max)	Temp. _(avg)	Precipitation
January	26°F	44°F	34°F	3.3"
February	26°F	46°F	35°F	2.6"
March	33°F	56°F	44°F	3.6"
April	44°F	68°F	56°F	4.0"
May	54°F	77°F	65°F	3.9"
June	64°F	86°F	74°F	4.8"
July	70°F	90°F	79°F	5.0"
August	68°F	87°F	77°F	5.8"
September	61°F	82°F	71°F	4.3"
October	50°F	70°F	59°F	4.7"
November	39°F	59°F	48°F	2.8"
December	31°F	49°F	40°F	4.7"

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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.
Index	Philadelphia	Pennsylvania	National
Air quality index	51	45	42
Pollution index	12,485,100	4,584,805	2,726,193

Philadelphia air quality

Measurement	Total
Days measured	365
Days with good air quality	180
Days with moderate air quality	169
Days w/ poor A.Q. for sensitive groups	16
Days with unhealthy air quality	0

Air quality details

Pollutant	Total
Arsenic	0.020%
Benzene	0.100%
Carbon Tetrachloride	0.100%
Lead	0.120%
Mercury	0.010%

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

City	Population	Air Quality Index	National Avg.
Penndel, PA	2,928	41	18.0%
Croydon, PA	9,693	41	18.0%
Hulmeville, PA	1,001	41	18.0%
Langhorne Manor, PA	1,491	41	18.0%
Trevose, PA	3,460	41	18.0%
Philadelphia, PA	1,581,531	51	2.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
San Antonio, TX	1,529,133	49	2.0%
Phoenix, AZ	1,658,422	74	48.0%
San Diego, CA	1,414,545	64	28.0%
Calgary, AB	1,371,990	n/a
Montréal, QC	1,811,008	n/a
Philadelphia, PA	1,581,531	51	2.0%

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.