| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 25°F | 46°F | 34°F | 3.6" |
| February | 26°F | 48°F | 36°F | 3.1" |
| March | 35°F | 60°F | 46°F | 4.3" |
| April | 45°F | 72°F | 58°F | 4.6" |
| May | 52°F | 78°F | 65°F | 4.9" |
| June | 61°F | 86°F | 73°F | 4.6" |
| July | 65°F | 87°F | 75°F | 6.8" |
| August | 63°F | 87°F | 74°F | 3.6" |
| September | 57°F | 82°F | 68°F | 3.5" |
| October | 45°F | 70°F | 57°F | 3.7" |
| November | 35°F | 60°F | 46°F | 3.0" |
| December | 29°F | 49°F | 38°F | 4.4" |
| Index | Chesapeake | Ohio | National |
| Air quality index | 42 | 40 | 42 |
| Pollution index | 2,383,860 | 4,472,386 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 299 |
| Days with moderate air quality | 66 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.002% |
| Benzene | 0.030% |
| Carbon Tetrachloride | 0.004% |
| Lead | 0.120% |
| Mercury | 0.020% |
| City | Population | Air Quality Index | National Avg. |
| Hanging Rock, OH | 174 | 14 | 72.0% |
| Westwood, KY | 4,752 | 42 | 16.0% |
| Barboursville, WV | 4,318 | 42 | 16.0% |
| Bellefonte, KY | 981 | 42 | 16.0% |
| Cannonsburg, KY | 701 | 42 | 16.0% |
| Chesapeake, OH | 1,208 | 42 | 16.0% |
| City | Population | Air Quality Index | National Avg. |
| Clifton, IL | 1,208 | 0 | 100.0% |
| Loving, NM | 1,208 | 47 | 6.0% |
| Skyline-Ganipa, NM | 1,208 | 53 | 6.0% |
| Lyons, OR | 1,208 | 32 | 36.0% |
| New Columbia, PA | 1,208 | 35 | 30.0% |
| Chesapeake, OH | 1,208 | 42 | 16.0% |
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