| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 16°F | 35°F | 26°F | 1.7" |
| February | 16°F | 37°F | 26°F | 1.5" |
| March | 24°F | 47°F | 35°F | 2.3" |
| April | 34°F | 61°F | 47°F | 2.9" |
| May | 44°F | 72°F | 58°F | 2.9" |
| June | 54°F | 80°F | 67°F | 4.0" |
| July | 58°F | 84°F | 71°F | 3.2" |
| August | 56°F | 82°F | 68°F | 4.3" |
| September | 49°F | 75°F | 62°F | 3.3" |
| October | 40°F | 63°F | 51°F | 3.9" |
| November | 29°F | 51°F | 40°F | 2.0" |
| December | 23°F | 40°F | 31°F | 2.2" |
| Index | Athens | Pennsylvania | National |
| Air quality index | 36 | 45 | 42 |
| Pollution index | 5,949,560 | 4,584,805 | 2,726,193 |
| Measurement | Total |
| Days measured | 352 |
| Days with good air quality | 314 |
| Days with moderate air quality | 38 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.560% |
| Benzene | 0.070% |
| Carbon Tetrachloride | 0.020% |
| Lead | 0.130% |
| Mercury | 0.040% |
| City | Population | Air Quality Index | National Avg. |
| Waverly, NY | 4,140 | 36 | 28.0% |
| Greens Landing, PA | 867 | 36 | 28.0% |
| Troy, PA | 1,395 | 36 | 28.0% |
| Wellsburg, NY | 386 | 36 | 28.0% |
| Burlington, PA | 205 | 36 | 28.0% |
| Athens, PA | 3,203 | 36 | 28.0% |
| City | Population | Air Quality Index | National Avg. |
| Brookhaven, NY | 3,203 | 43 | 14.0% |
| Coplay, PA | 3,204 | 42 | 16.0% |
| Howe, TX | 3,204 | 325 | 550.0% |
| Beulah, ND | 3,201 | 33 | 34.0% |
| Crockett, CA | 3,205 | 40 | 20.0% |
| Athens, PA | 3,203 | 36 | 28.0% |
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