| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 21°F | 35°F | 27°F | 6.0" |
| February | 16°F | 30°F | 23°F | 2.8" |
| March | 26°F | 44°F | 34°F | 2.3" |
| April | 37°F | 56°F | 46°F | 5.0" |
| May | 46°F | 69°F | 57°F | 4.1" |
| June | 58°F | 79°F | 69°F | 5.2" |
| July | 61°F | 81°F | 70°F | 6.9" |
| August | 62°F | 80°F | 71°F | 9.1" |
| September | 55°F | 75°F | 65°F | 7.2" |
| October | 48°F | 64°F | 55°F | 3.9" |
| November | 33°F | 50°F | 41°F | 6.2" |
| December | 23°F | 34°F | 28°F | 3.1" |
| Index | Meadville | 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. |
| Hannasville, PA | 151 | 31 | 38.0% |
| Sheakleyville, PA | 140 | 31 | 38.0% |
| Cochranton, PA | 1,019 | 31 | 38.0% |
| Utica, PA | 115 | 31 | 38.0% |
| Cooperstown, PA | 395 | 31 | 38.0% |
| Meadville, PA | 12,684 | 36 | 28.0% |
| City | Population | Air Quality Index | National Avg. |
| Endicott, NY | 12,684 | 36 | 28.0% |
| Echelon, NJ | 12,687 | 51 | 2.0% |
| Lansdowne, VA | 12,679 | 47 | 6.0% |
| Crowley, LA | 12,689 | 41 | 18.0% |
| St. Ann, MO | 12,689 | 54 | 8.0% |
| Meadville, PA | 12,684 | 36 | 28.0% |
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