| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 27°F | 44°F | 34°F | 2.9" |
| February | 28°F | 46°F | 36°F | 2.9" |
| March | 39°F | 60°F | 49°F | 4.7" |
| April | 49°F | 72°F | 60°F | 5.9" |
| May | 58°F | 79°F | 68°F | 4.9" |
| June | 67°F | 88°F | 77°F | 4.9" |
| July | 69°F | 89°F | 79°F | 5.6" |
| August | 68°F | 89°F | 78°F | 3.2" |
| September | 60°F | 83°F | 71°F | 4.9" |
| October | 48°F | 71°F | 59°F | 4.4" |
| November | 38°F | 59°F | 47°F | 3.6" |
| December | 32°F | 48°F | 39°F | 4.4" |
| Index | Island | Kentucky | National |
| Air quality index | 43 | 45 | 42 |
| Pollution index | 1,436,290 | 1,369,131 | 2,726,193 |
| Measurement | Total |
| Days measured | 364 |
| Days with good air quality | 276 |
| Days with moderate air quality | 87 |
| Days w/ poor A.Q. for sensitive groups | 1 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.001% |
| Benzene | 0.030% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.003% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Cleaton, KY | 163 | 43 | 14.0% |
| Livermore, KY | 1,116 | 43 | 14.0% |
| Utica, KY | 446 | 43 | 14.0% |
| Sacramento, KY | 443 | 43 | 14.0% |
| Rockport, KY | 227 | 43 | 14.0% |
| Island, KY | 576 | 43 | 14.0% |
| City | Population | Air Quality Index | National Avg. |
| Onyx, CA | 576 | 67 | 34.0% |
| Yankeetown, FL | 576 | 30 | 40.0% |
| Coolidge, GA | 576 | 35 | 30.0% |
| Whittemore, IA | 576 | 15 | 70.0% |
| Interlaken, NY | 576 | 34 | 32.0% |
| Island, KY | 576 | 43 | 14.0% |
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