| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 25°F | 41°F | 32°F | 3.2" |
| February | 25°F | 40°F | 32°F | 3.0" |
| March | 33°F | 52°F | 42°F | 3.2" |
| April | 44°F | 65°F | 54°F | 4.0" |
| May | 52°F | 74°F | 62°F | 4.0" |
| June | 64°F | 83°F | 73°F | 5.1" |
| July | 67°F | 86°F | 76°F | 5.1" |
| August | 67°F | 85°F | 75°F | 3.5" |
| September | 59°F | 77°F | 67°F | 5.2" |
| October | 47°F | 66°F | 55°F | 4.2" |
| November | 38°F | 55°F | 45°F | 3.2" |
| December | 28°F | 42°F | 35°F | 5.1" |
| Index | Valley Green | Pennsylvania | National |
| Air quality index | 44 | 45 | 42 |
| Pollution index | 11,091,200 | 4,584,805 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 252 |
| Days with moderate air quality | 107 |
| Days w/ poor A.Q. for sensitive groups | 5 |
| Days with unhealthy air quality | 1 |
| 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. |
| Queens Gate, PA | 1,407 | 41 | 18.0% |
| Dover, PA | 2,124 | 41 | 18.0% |
| Hallam, PA | 2,642 | 41 | 18.0% |
| Shiloh, PA | 10,850 | 41 | 18.0% |
| York, PA | 44,019 | 41 | 18.0% |
| Valley Green, PA | 3,504 | 44 | 12.0% |
| City | Population | Air Quality Index | National Avg. |
| Red Bud, IL | 3,504 | 54 | 8.0% |
| Lyons, KS | 3,504 | 40 | 20.0% |
| Lavon, TX | 3,504 | 51 | 2.0% |
| Broken Bow, NE | 3,503 | 19 | 62.0% |
| Montrose, MN | 3,505 | 46 | 8.0% |
| Valley Green, PA | 3,504 | 44 | 12.0% |
Here are the best places to live in Pennsylvania
See the best places to live in Valley Green
Most Dangerous Cities In The US
These are the 10 cheapest cities in Pennsylvania