| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 20°F | 34°F | 26°F | 2.8" |
| February | 20°F | 36°F | 27°F | 2.4" |
| March | 31°F | 52°F | 40°F | 4.8" |
| April | 40°F | 63°F | 50°F | 3.3" |
| May | 49°F | 74°F | 60°F | 4.6" |
| June | 57°F | 81°F | 68°F | 5.5" |
| July | 61°F | 85°F | 72°F | 6.5" |
| August | 59°F | 83°F | 70°F | 4.0" |
| September | 53°F | 76°F | 63°F | 3.8" |
| October | 43°F | 63°F | 52°F | 3.5" |
| November | 33°F | 53°F | 42°F | 3.6" |
| December | 25°F | 40°F | 31°F | 3.3" |
| Index | New Middletown | Ohio | National |
| Air quality index | 42 | 40 | 42 |
| Pollution index | 2,559,460 | 4,472,386 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 276 |
| Days with moderate air quality | 89 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.005% |
| Benzene | 0.030% |
| Carbon Tetrachloride | 0.030% |
| Lead | 0.060% |
| Mercury | 0.050% |
| City | Population | Air Quality Index | National Avg. |
| Rogers, OH | 186 | 6 | 88.0% |
| East Palestine, OH | 4,457 | 6 | 88.0% |
| Lake Tomahawk, OH | 713 | 6 | 88.0% |
| Lisbon, OH | 2,671 | 6 | 88.0% |
| Negley, OH | 352 | 6 | 88.0% |
| New Middletown, OH | 1,389 | 42 | 16.0% |
| City | Population | Air Quality Index | National Avg. |
| Grandview, IL | 1,389 | 40 | 20.0% |
| West Leechburg, PA | 1,389 | 56 | 12.0% |
| Gardendale, TX | 1,389 | 28 | 44.0% |
| Parks, AZ | 1,388 | 45 | 10.0% |
| Lone Tree, IA | 1,390 | 35 | 30.0% |
| New Middletown, OH | 1,389 | 42 | 16.0% |
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