| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 20°F | 37°F | 28°F | 5.5" |
| February | 16°F | 32°F | 23°F | 2.8" |
| March | 24°F | 44°F | 34°F | 4.3" |
| April | 34°F | 60°F | 46°F | 4.5" |
| May | 43°F | 72°F | 57°F | 5.1" |
| June | 55°F | 80°F | 67°F | 4.6" |
| July | 57°F | 82°F | 69°F | 4.1" |
| August | 59°F | 82°F | 70°F | 6.5" |
| September | 51°F | 77°F | 63°F | 1.7" |
| October | 44°F | 65°F | 53°F | 5.0" |
| November | 30°F | 50°F | 39°F | 5.9" |
| December | 22°F | 34°F | 27°F | 4.0" |
| Index | Byrnedale | Pennsylvania | National |
| Air quality index | 35 | 45 | 42 |
| Pollution index | 2,854,150 | 4,584,805 | 2,726,193 |
| Measurement | Total |
| Days measured | 357 |
| Days with good air quality | 345 |
| Days with moderate air quality | 12 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.010% |
| Benzene | 0.030% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.010% |
| Mercury | 0.010% |
| City | Population | Air Quality Index | National Avg. |
| Crenshaw, PA | 320 | 33 | 34.0% |
| DuBois, PA | 7,413 | 33 | 34.0% |
| Treasure Lake, PA | 4,418 | 33 | 34.0% |
| Sandy, PA | 1,340 | 33 | 34.0% |
| Ridgway, PA | 3,781 | 35 | 30.0% |
| Byrnedale, PA | 588 | 35 | 30.0% |
| City | Population | Air Quality Index | National Avg. |
| Plainview, AR | 588 | 38 | 24.0% |
| Avondale, CO | 588 | 20 | 60.0% |
| Irvington, IL | 588 | 43 | 14.0% |
| Payne Gap, KY | 588 | 45 | 10.0% |
| Catawba, NC | 588 | 43 | 14.0% |
| Byrnedale, PA | 588 | 35 | 30.0% |
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