| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 20°F | 36°F | 28°F | 1.9" |
| February | 20°F | 37°F | 28°F | 1.7" |
| March | 29°F | 49°F | 39°F | 2.6" |
| April | 40°F | 64°F | 51°F | 2.6" |
| May | 50°F | 73°F | 61°F | 3.5" |
| June | 59°F | 81°F | 70°F | 4.7" |
| July | 63°F | 85°F | 74°F | 3.5" |
| August | 62°F | 83°F | 72°F | 3.3" |
| September | 55°F | 77°F | 65°F | 3.1" |
| October | 44°F | 64°F | 54°F | 3.2" |
| November | 34°F | 53°F | 43°F | 2.3" |
| December | 26°F | 41°F | 33°F | 2.6" |
| Index | Mantua | Ohio | National |
| Air quality index | 43 | 40 | 42 |
| Pollution index | 15,814,600 | 4,472,386 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 278 |
| Days with moderate air quality | 84 |
| Days w/ poor A.Q. for sensitive groups | 3 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.500% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.004% |
| Lead | 0.130% |
| Mercury | 0.510% |
| City | Population | Air Quality Index | National Avg. |
| Lake Milton, OH | 541 | 42 | 16.0% |
| Newton Falls, OH | 4,494 | 42 | 16.0% |
| Craig Beach, OH | 1,645 | 42 | 16.0% |
| Parkman, OH | 166 | 42 | 16.0% |
| Windham, OH | 2,019 | 42 | 16.0% |
| Mantua, OH | 950 | 43 | 14.0% |
| City | Population | Air Quality Index | National Avg. |
| Dotsero, CO | 950 | 44 | 12.0% |
| Hanson, KY | 950 | 43 | 14.0% |
| Barre, MA | 950 | 40 | 20.0% |
| Queenstown, MD | 950 | 41 | 18.0% |
| Mantorville, MN | 950 | 36 | 28.0% |
| Mantua, OH | 950 | 43 | 14.0% |
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