| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 22°F | 42°F | 32°F | 3.4" |
| February | 23°F | 44°F | 33°F | 3.1" |
| March | 33°F | 57°F | 44°F | 4.6" |
| April | 43°F | 69°F | 56°F | 5.0" |
| May | 52°F | 77°F | 64°F | 4.0" |
| June | 61°F | 85°F | 73°F | 5.2" |
| July | 65°F | 87°F | 76°F | 4.0" |
| August | 64°F | 88°F | 76°F | 3.0" |
| September | 57°F | 81°F | 69°F | 4.1" |
| October | 45°F | 69°F | 57°F | 4.1" |
| November | 34°F | 57°F | 45°F | 3.5" |
| December | 27°F | 45°F | 36°F | 4.5" |
| Index | Carrollton | Kentucky | National |
| Air quality index | 35 | 45 | 42 |
| Pollution index | 8,502,260 | 1,369,131 | 2,726,193 |
| Measurement | Total |
| Days measured | 360 |
| Days with good air quality | 340 |
| Days with moderate air quality | 20 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.010% |
| Benzene | 0.080% |
| Carbon Tetrachloride | 0.670% |
| Lead | 0.020% |
| Mercury | 0.010% |
| City | Population | Air Quality Index | National Avg. |
| Brooksburg, IN | 71 | 35 | 30.0% |
| Madison, IN | 11,783 | 35 | 30.0% |
| Canaan, IN | 70 | 35 | 30.0% |
| Milton, KY | 615 | 35 | 30.0% |
| Prestonville, KY | 184 | 35 | 30.0% |
| Carrollton, KY | 3,806 | 35 | 30.0% |
| City | Population | Air Quality Index | National Avg. |
| Woodbridge, CA | 3,806 | 45 | 10.0% |
| Elma Center, NY | 3,806 | 39 | 22.0% |
| Granger, WA | 3,806 | 38 | 24.0% |
| Raymond, NH | 3,807 | 37 | 26.0% |
| Bordentown, NJ | 3,808 | 41 | 18.0% |
| Carrollton, KY | 3,806 | 35 | 30.0% |
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