| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 31°F | 48°F | 38°F | 4.1" |
| February | 22°F | 45°F | 33°F | 3.8" |
| March | 31°F | 55°F | 41°F | 8.2" |
| April | 46°F | 69°F | 56°F | 11.0" |
| May | 56°F | 78°F | 66°F | 0.8" |
| June | 65°F | 83°F | 74°F | 12.8" |
| July | 68°F | 86°F | 76°F | 7.5" |
| August | 65°F | 85°F | 74°F | 5.1" |
| September | 61°F | 82°F | 70°F | 4.7" |
| October | 48°F | 71°F | 58°F | 13.4" |
| November | 38°F | 59°F | 46°F | 3.2" |
| December | 32°F | 50°F | 40°F | 7.1" |
| Index | Flatwoods | Kentucky | National |
| Air quality index | 42 | 45 | 42 |
| Pollution index | 2,383,860 | 1,369,131 | 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 | 168 | 14 | 72.0% |
| Worthington, KY | 1,639 | 14 | 72.0% |
| Wurtland, KY | 1,452 | 14 | 72.0% |
| South Shore, KY | 1,287 | 14 | 72.0% |
| Greenup, KY | 1,233 | 14 | 72.0% |
| Flatwoods, KY | 7,143 | 42 | 16.0% |
| City | Population | Air Quality Index | National Avg. |
| Collinsville, OK | 7,140 | 45 | 10.0% |
| Watford City, ND | 7,146 | 34 | 32.0% |
| Belle Isle, FL | 7,139 | 39 | 22.0% |
| River Park, FL | 7,139 | 36 | 28.0% |
| Putnam, CT | 7,138 | 33 | 34.0% |
| Flatwoods, KY | 7,143 | 42 | 16.0% |
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