| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 25°F | 44°F | 34°F | 4.2" |
| February | 25°F | 47°F | 35°F | 3.4" |
| March | 35°F | 59°F | 46°F | 4.1" |
| April | 45°F | 70°F | 57°F | 5.7" |
| May | 53°F | 77°F | 65°F | 5.0" |
| June | 62°F | 86°F | 74°F | 5.2" |
| July | 65°F | 88°F | 76°F | 6.1" |
| August | 64°F | 88°F | 76°F | 4.7" |
| September | 57°F | 82°F | 69°F | 3.9" |
| October | 46°F | 71°F | 57°F | 4.0" |
| November | 35°F | 59°F | 46°F | 3.0" |
| December | 29°F | 48°F | 38°F | 5.2" |
| Index | Hustonville | Kentucky | National |
| Air quality index | 40 | 45 | 42 |
| Pollution index | 445,726 | 1,369,131 | 2,726,193 |
| Measurement | Total |
| Days measured | 282 |
| Days with good air quality | 267 |
| Days with moderate air quality | 15 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.005% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Perryville, KY | 964 | 33 | 34.0% |
| Stanford, KY | 3,673 | 33 | 34.0% |
| Danville, KY | 16,801 | 33 | 34.0% |
| Junction City, KY | 1,944 | 33 | 34.0% |
| Lancaster, KY | 3,837 | 33 | 34.0% |
| Hustonville, KY | 564 | 40 | 20.0% |
| City | Population | Air Quality Index | National Avg. |
| Dodge City, AL | 564 | 53 | 6.0% |
| Joiner, AR | 564 | 45 | 10.0% |
| Dexter, IA | 564 | 39 | 22.0% |
| Platte Woods, MO | 564 | 47 | 6.0% |
| Allenport, PA | 564 | 44 | 12.0% |
| Hustonville, KY | 564 | 40 | 20.0% |
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