| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 29°F | 46°F | 37°F | 7.2" |
| February | 24°F | 44°F | 33°F | 3.6" |
| March | 35°F | 58°F | 46°F | 5.3" |
| April | 43°F | 67°F | 55°F | 7.0" |
| May | 50°F | 78°F | 64°F | 5.5" |
| June | 62°F | 86°F | 74°F | 2.0" |
| July | 65°F | 88°F | 76°F | 5.7" |
| August | 68°F | 92°F | 79°F | 8.9" |
| September | 59°F | 85°F | 71°F | 2.7" |
| October | 48°F | 72°F | 59°F | 10.4" |
| November | 35°F | 59°F | 46°F | 5.6" |
| December | 29°F | 45°F | 36°F | 5.7" |
| Index | Willisburg | Kentucky | National |
| Air quality index | 49 | 45 | 42 |
| Pollution index | 306,537 | 1,369,131 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 195 |
| Days with moderate air quality | 166 |
| Days w/ poor A.Q. for sensitive groups | 4 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Perryville, KY | 964 | 33 | 34.0% |
| Springfield, KY | 2,965 | 39 | 22.0% |
| Loretto, KY | 723 | 39 | 22.0% |
| Salvisa, KY | 167 | 42 | 16.0% |
| Harrodsburg, KY | 8,480 | 42 | 16.0% |
| Willisburg, KY | 357 | 49 | 2.0% |
| City | Population | Air Quality Index | National Avg. |
| Shonto, AZ | 357 | 45 | 10.0% |
| Chacra, CO | 357 | 44 | 12.0% |
| City of Creede, CO | 357 | 44 | 12.0% |
| La Crosse, FL | 357 | 35 | 30.0% |
| Millbrook, IL | 357 | 0 | 100.0% |
| Willisburg, KY | 357 | 49 | 2.0% |
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