| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 29°F | 47°F | 37°F | 6.4" |
| February | 30°F | 50°F | 39°F | 6.1" |
| March | 41°F | 62°F | 50°F | 6.5" |
| April | 50°F | 72°F | 60°F | 8.0" |
| May | 58°F | 78°F | 68°F | 9.4" |
| June | 66°F | 87°F | 76°F | 6.7" |
| July | 69°F | 89°F | 78°F | 9.1" |
| August | 68°F | 89°F | 78°F | 6.8" |
| September | 61°F | 83°F | 71°F | 7.1" |
| October | 49°F | 72°F | 60°F | 8.6" |
| November | 39°F | 60°F | 49°F | 6.2" |
| December | 33°F | 51°F | 41°F | 7.9" |
| Index | Pembroke | Kentucky | National |
| Air quality index | 40 | 45 | 42 |
| Pollution index | 5,501,360 | 1,369,131 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 307 |
| Days with moderate air quality | 58 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.010% |
| Benzene | 0.130% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.020% |
| Mercury | 0.800% |
| City | Population | Air Quality Index | National Avg. |
| Fort Campbell North, KY | 14,363 | 40 | 20.0% |
| Fairview city, KY | 148 | 40 | 20.0% |
| Hopkinsville, KY | 31,052 | 40 | 20.0% |
| Trenton, KY | 402 | 40 | 20.0% |
| Oak Grove, KY | 7,332 | 40 | 20.0% |
| Pembroke, KY | 725 | 40 | 20.0% |
| City | Population | Air Quality Index | National Avg. |
| Middletown, CA | 725 | 31 | 38.0% |
| Homestead Base, FL | 725 | 41 | 18.0% |
| Blairsville, GA | 725 | 37 | 26.0% |
| Wellsburg, IA | 725 | 39 | 22.0% |
| Chesapeake City, MD | 725 | 42 | 16.0% |
| Pembroke, KY | 725 | 40 | 20.0% |
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