| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 26°F | 43°F | 34°F | 6.1" |
| February | 27°F | 46°F | 35°F | 5.4" |
| March | 38°F | 59°F | 47°F | 8.7" |
| April | 47°F | 71°F | 58°F | 10.2" |
| May | 58°F | 79°F | 68°F | 7.3" |
| June | 66°F | 87°F | 76°F | 7.8" |
| July | 67°F | 89°F | 77°F | 9.5" |
| August | 66°F | 88°F | 76°F | 6.9" |
| September | 58°F | 82°F | 69°F | 11.3" |
| October | 47°F | 71°F | 58°F | 10.3" |
| November | 37°F | 58°F | 46°F | 8.2" |
| December | 30°F | 47°F | 38°F | 9.0" |
| Index | Robards | Kentucky | National |
| Air quality index | 45 | 45 | 42 |
| Pollution index | 768,150 | 1,369,131 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 244 |
| Days with moderate air quality | 111 |
| Days w/ poor A.Q. for sensitive groups | 10 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.005% |
| Lead | 0.003% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Slaughters, KY | 249 | 43 | 14.0% |
| Onton, KY | 18 | 43 | 14.0% |
| Sebree, KY | 1,552 | 43 | 14.0% |
| Beech Grove, KY | 270 | 43 | 14.0% |
| Henderson, KY | 28,469 | 45 | 10.0% |
| Robards, KY | 481 | 45 | 10.0% |
| City | Population | Air Quality Index | National Avg. |
| Pleasant Groves, AL | 481 | 44 | 12.0% |
| Newell, CA | 481 | 29 | 42.0% |
| Manilla, IN | 481 | 28 | 44.0% |
| Kensington, KS | 481 | 19 | 62.0% |
| Scandia, KS | 481 | 32 | 36.0% |
| Robards, KY | 481 | 45 | 10.0% |
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