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 | Yorklyn | Pennsylvania | National |
Air quality index | 41 | 45 | 42 |
Pollution index | 11,091,200 | 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 | 0.010% |
Benzene | 0.140% |
Carbon Tetrachloride | 0.030% |
Lead | 0.310% |
Mercury | 0.004% |
City | Population | Air Quality Index | National Avg. |
Felton, PA | 644 | 41 | 18.0% |
Loganville, PA | 1,311 | 41 | 18.0% |
Dallastown, PA | 3,889 | 41 | 18.0% |
New Salem, PA | 886 | 41 | 18.0% |
Tyler Run, PA | 1,931 | 41 | 18.0% |
Yorklyn, PA | 1,992 | 41 | 18.0% |
City | Population | Air Quality Index | National Avg. |
Marion, MS | 1,992 | 36 | 28.0% |
Lorenz Park, NY | 1,992 | 37 | 26.0% |
Bell Canyon, CA | 1,991 | 72 | 44.0% |
Munising, MI | 1,991 | 8 | 84.0% |
Edisto, SC | 1,993 | 43 | 14.0% |
Yorklyn, PA | 1,992 | 41 | 18.0% |