| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 25°F | 39°F | 32°F | 8.6" |
| February | 19°F | 35°F | 27°F | 2.8" |
| March | 32°F | 52°F | 41°F | 7.3" |
| April | 40°F | 63°F | 51°F | 6.0" |
| May | 48°F | 75°F | 62°F | 4.9" |
| June | 61°F | 84°F | 73°F | 6.4" |
| July | 63°F | 85°F | 74°F | 6.1" |
| August | 65°F | 87°F | 75°F | 8.0" |
| September | 56°F | 81°F | 68°F | 6.4" |
| October | 48°F | 67°F | 57°F | 4.5" |
| November | 34°F | 54°F | 44°F | 4.0" |
| December | 24°F | 38°F | 31°F | 3.4" |
| Index | Minerva Park | Ohio | National |
| Air quality index | 46 | 40 | 42 |
| Pollution index | 21,574,800 | 4,472,386 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 237 |
| Days with moderate air quality | 127 |
| Days w/ poor A.Q. for sensitive groups | 1 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.030% |
| Benzene | 0.230% |
| Carbon Tetrachloride | 0.100% |
| Lead | 0.190% |
| Mercury | 0.010% |
| City | Population | Air Quality Index | National Avg. |
| Hartford, OH | 362 | 41 | 18.0% |
| Delaware, OH | 42,781 | 46 | 8.0% |
| Grandview Heights, OH | 8,554 | 46 | 8.0% |
| Marble Cliff, OH | 712 | 46 | 8.0% |
| Riverlea, OH | 589 | 46 | 8.0% |
| Minerva Park, OH | 1,415 | 46 | 8.0% |
| City | Population | Air Quality Index | National Avg. |
| Highfill, AR | 1,415 | 44 | 12.0% |
| Gilcrest, CO | 1,415 | 45 | 10.0% |
| New Windsor, MD | 1,415 | 42 | 16.0% |
| Antrim, NH | 1,415 | 34 | 32.0% |
| Nellysford, VA | 1,415 | 40 | 20.0% |
| Minerva Park, OH | 1,415 | 46 | 8.0% |