| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 33°F | 54°F | 42°F | 8.0" |
| February | 34°F | 56°F | 44°F | 7.2" |
| March | 43°F | 67°F | 54°F | 7.5" |
| April | 50°F | 75°F | 62°F | 7.6" |
| May | 57°F | 81°F | 68°F | 6.5" |
| June | 66°F | 89°F | 76°F | 5.7" |
| July | 69°F | 90°F | 78°F | 8.6" |
| August | 69°F | 90°F | 78°F | 7.2" |
| September | 62°F | 84°F | 72°F | 7.1" |
| October | 50°F | 75°F | 61°F | 4.3" |
| November | 38°F | 64°F | 49°F | 3.3" |
| December | 36°F | 56°F | 45°F | 11.8" |
| Index | Leesburg | Alabama | National |
| Air quality index | 43 | 37 | 42 |
| Pollution index | 2,295,500 | 3,012,339 | 2,726,193 |
| Measurement | Total |
| Days measured | 279 |
| Days with good air quality | 232 |
| Days with moderate air quality | 47 |
| 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 | 0.002% |
| Lead | 0.010% |
| Mercury | 0.002% |
| City | Population | Air Quality Index | National Avg. |
| Collinsville, AL | 2,312 | 39 | 22.0% |
| Lakeview, AL | 201 | 39 | 22.0% |
| Sand Rock, AL | 834 | 39 | 22.0% |
| Gaylesville, AL | 178 | 39 | 22.0% |
| Broomtown, AL | 103 | 39 | 22.0% |
| Leesburg, AL | 936 | 43 | 14.0% |
| City | Population | Air Quality Index | National Avg. |
| Weir, KS | 936 | 37 | 26.0% |
| Qulin, MO | 936 | 26 | 48.0% |
| Oshkosh, NE | 936 | 19 | 62.0% |
| Richmondville, NY | 936 | 37 | 26.0% |
| Orleans, VT | 936 | 37 | 26.0% |
| Leesburg, AL | 936 | 43 | 14.0% |
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