| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 24°F | 42°F | 32°F | 3.2" |
| February | 25°F | 43°F | 33°F | 2.4" |
| March | 33°F | 55°F | 43°F | 3.9" |
| April | 43°F | 68°F | 55°F | 4.1" |
| May | 52°F | 75°F | 63°F | 4.3" |
| June | 60°F | 82°F | 71°F | 4.8" |
| July | 64°F | 85°F | 74°F | 6.0" |
| August | 63°F | 84°F | 73°F | 4.0" |
| September | 57°F | 79°F | 67°F | 3.2" |
| October | 46°F | 67°F | 56°F | 3.9" |
| November | 36°F | 57°F | 46°F | 2.7" |
| December | 29°F | 46°F | 37°F | 4.1" |
| Index | Fairdale | Pennsylvania | National |
| Air quality index | 36 | 45 | 42 |
| Pollution index | 6,478,770 | 4,584,805 | 2,726,193 |
| Measurement | Total |
| Days measured | 364 |
| Days with good air quality | 337 |
| Days with moderate air quality | 27 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.030% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.010% |
| Lead | 0.020% |
| Mercury | 0.210% |
| City | Population | Air Quality Index | National Avg. |
| Deemston, PA | 702 | 36 | 28.0% |
| Marianna, PA | 531 | 36 | 28.0% |
| East Uniontown, PA | 2,231 | 36 | 28.0% |
| Nemacolin, PA | 943 | 36 | 28.0% |
| Waynesburg, PA | 3,975 | 36 | 28.0% |
| Fairdale, PA | 2,358 | 36 | 28.0% |
| City | Population | Air Quality Index | National Avg. |
| West Branch, IA | 2,357 | 35 | 30.0% |
| Anchorage, KY | 2,357 | 49 | 2.0% |
| Fall City, WA | 2,357 | 45 | 10.0% |
| Woodsfield, OH | 2,359 | 39 | 22.0% |
| Kenilworth, IL | 2,356 | 55 | 10.0% |
| Fairdale, PA | 2,358 | 36 | 28.0% |
Here are the best places to live in Pennsylvania
See the best places to live in Fairdale
These are the largest cities in Pennsylvania
Check out the 10 safest cities in Pennsylvania