| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 36°F | 55°F | 44°F | 8.9" |
| February | 38°F | 58°F | 47°F | 10.4" |
| March | 47°F | 68°F | 56°F | 11.1" |
| April | 54°F | 76°F | 64°F | 15.2" |
| May | 61°F | 82°F | 71°F | 9.3" |
| June | 69°F | 90°F | 79°F | 7.9" |
| July | 72°F | 92°F | 81°F | 4.2" |
| August | 71°F | 92°F | 80°F | 7.0" |
| September | 65°F | 87°F | 75°F | 8.4" |
| October | 53°F | 77°F | 64°F | 4.6" |
| November | 43°F | 66°F | 53°F | 3.4" |
| December | 39°F | 57°F | 47°F | 8.8" |
| Index | Macon | Mississippi | National |
| Air quality index | 36 | 40 | 42 |
| Pollution index | 765,692 | 1,514,109 | 2,726,193 |
| Measurement | Total |
| Days measured | 245 |
| Days with good air quality | 229 |
| Days with moderate air quality | 16 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.004% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.010% |
| Mercury | 0.003% |
| City | Population | Air Quality Index | National Avg. |
| Memphis, AL | 10 | 35 | 30.0% |
| Shuqualak, MS | 491 | 36 | 28.0% |
| Brooksville, MS | 1,123 | 36 | 28.0% |
| Crawford, MS | 423 | 36 | 28.0% |
| Macon, MS | 3,069 | 36 | 28.0% |
| City | Population | Air Quality Index | National Avg. |
| Hampton, NB | 3,069 | n/a | |
| East Dennis, MA | 3,068 | 36 | 28.0% |
| Saint-Jean-Baptiste, QC | 3,068 | n/a | |
| Brightwaters, NY | 3,070 | 43 | 14.0% |
| Doylestown, OH | 3,070 | 43 | 14.0% |
| Macon, MS | 3,069 | 36 | 28.0% |
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