Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
January | 25°F | 42°F | 33°F | 4.1" |
February | 19°F | 39°F | 29°F | 3.3" |
March | 27°F | 51°F | 38°F | 7.5" |
April | 39°F | 62°F | 50°F | 7.2" |
May | 46°F | 73°F | 60°F | 3.6" |
June | 60°F | 84°F | 72°F | 4.8" |
July | 62°F | 86°F | 74°F | 7.7" |
August | 63°F | 86°F | 74°F | 8.7" |
September | 54°F | 81°F | 67°F | 0.4" |
October | 47°F | 71°F | 58°F | 10.0" |
November | 33°F | 57°F | 45°F | 4.7" |
December | 23°F | 41°F | 33°F | 4.8" |
Index | West York | Pennsylvania | National |
Air quality index | 41 | 45 | 42 |
Pollution index | 12,532,500 | 4,584,805 | 2,726,193 |
Measurement | Total |
Days measured | 365 |
Days with good air quality | 299 |
Days with moderate air quality | 66 |
Days w/ poor A.Q. for sensitive groups | 0 |
Days with unhealthy air quality | 0 |
Pollutant | Total |
Arsenic | 0.180% |
Benzene | 0.090% |
Carbon Tetrachloride | 0.020% |
Lead | 0.130% |
Mercury | 0.270% |
City | Population | Air Quality Index | National Avg. |
Felton, PA | 644 | 41 | 18.0% |
Jefferson, PA | 606 | 41 | 18.0% |
Seven Valleys, PA | 626 | 41 | 18.0% |
Dallastown, PA | 3,889 | 41 | 18.0% |
New Salem CDP, PA | 446 | 41 | 18.0% |
West York, PA | 4,636 | 41 | 18.0% |
City | Population | Air Quality Index | National Avg. |
Smoky Lake County, AB | 4,636 | n/a | |
Todd Creek, CO | 4,635 | 58 | 16.0% |
Lemoyne, PA | 4,635 | 44 | 12.0% |
Seguin, ON | 4,637 | n/a | |
Rock Hill, MO | 4,634 | 54 | 8.0% |
West York, PA | 4,636 | 41 | 18.0% |