Castle Shannon, PA Weather - Forecast & Monthly Averages

TEMPERATURE	20
HUMIDITY	62
PRESSURE	103150
WIND COND.

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Weather Quick Facts

The highest monthly average temperature in Castle Shannon for July is 73.5 degrees
The lowest monthly average temperature in Castle Shannon for January is 29.7 degrees
The most monthly precipitation in Castle Shannon occurs in July with 5.1 inches
The air quality index in Castle Shannon is 33% worse than the national average
The pollution index in Castle Shannon is 7% better than the national average

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Castle Shannon 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	22°F	38°F	30°F	3.2"
February	23°F	39°F	30°F	2.2"
March	32°F	52°F	41°F	3.4"
April	43°F	65°F	53°F	3.4"
May	52°F	74°F	62°F	4.2"
June	60°F	81°F	70°F	5.1"
July	64°F	84°F	73°F	5.1"
August	63°F	82°F	72°F	4.1"
September	56°F	77°F	66°F	3.1"
October	46°F	65°F	54°F	3.8"
November	35°F	54°F	44°F	2.8"
December	28°F	43°F	35°F	3.7"

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Castle Shannon 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	Castle Shannon	Pennsylvania	National
Air quality index	56	45	42
Pollution index	2,548,030	4,584,805	2,726,193

Castle Shannon air quality

Measurement	Total
Days measured	365
Days with good air quality	129
Days with moderate air quality	220
Days w/ poor A.Q. for sensitive groups	12
Days with unhealthy air quality	4

Air quality details

Pollutant	Total
Arsenic	0.220%
Benzene	0.040%
Carbon Tetrachloride	0.010%
Lead	0.050%
Mercury	0.020%

Average monthly Castle Shannon temperature with heat index

Castle Shannon monthly precipitation with daily maximum

Castle Shannon monthly snow depth with daily maximum

Castle Shannon monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Westland, PA	45	46	8.0%
Wolfdale, PA	3,097	46	8.0%
Clinton, PA	1,049	46	8.0%
Hickory, PA	542	46	8.0%
Bethel Park, PA	32,310	56	12.0%
Castle Shannon, PA	8,249	56	12.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Oak Hill, WV	8,249	295	490.0%
Kitimat, BC	8,251	n/a
Cuero, TX	8,246	31	38.0%
Oberlin, OH	8,252	50	= 100
Ahuimanu, HI	8,254	30	40.0%
Castle Shannon, PA	8,249	56	12.0%

Source: The Castle Shannon, 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.