| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 21°F | 36°F | 28°F | 3.3" |
| February | 19°F | 36°F | 27°F | 2.8" |
| March | 26°F | 46°F | 36°F | 3.0" |
| April | 37°F | 59°F | 48°F | 3.2" |
| May | 48°F | 70°F | 59°F | 3.7" |
| June | 58°F | 79°F | 68°F | 4.3" |
| July | 63°F | 82°F | 73°F | 4.3" |
| August | 62°F | 81°F | 72°F | 4.2" |
| September | 56°F | 75°F | 65°F | 4.8" |
| October | 46°F | 64°F | 54°F | 5.4" |
| November | 36°F | 53°F | 44°F | 3.9" |
| December | 27°F | 41°F | 34°F | 4.4" |
| Index | Penn State Erie (Behrend) | Pennsylvania | National |
| Air quality index | 36 | 45 | 42 |
| Pollution index | 3,205,550 | 4,584,805 | 2,726,193 |
| Measurement | Total |
| Days measured | 364 |
| Days with good air quality | 322 |
| Days with moderate air quality | 42 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.010% |
| Benzene | 0.040% |
| Carbon Tetrachloride | 0.010% |
| Lead | 0.170% |
| Mercury | 0.005% |
| City | Population | Air Quality Index | National Avg. |
| Erie, PA | 100,285 | 36 | 28.0% |
| Fairview, PA | 2,853 | 36 | 28.0% |
| Lawrence Park, PA | 3,928 | 36 | 28.0% |
| Ripley, NY | 863 | 36 | 28.0% |
| McKean, PA | 467 | 36 | 28.0% |
| Penn State Erie (Behrend), PA | 1,649 | 36 | 28.0% |
| City | Population | Air Quality Index | National Avg. |
| Dauphin Island, AL | 1,649 | 32 | 36.0% |
| Vienna, IL | 1,649 | 44 | 12.0% |
| Sun Prairie, MT | 1,649 | 21 | 58.0% |
| Middleburg, PA | 1,649 | 35 | 30.0% |
| Olivet, TN | 1,649 | 37 | 26.0% |
| Penn State Erie (Behrend), PA | 1,649 | 36 | 28.0% |