| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 42°F | 65°F | 52°F | 7.3" |
| February | 45°F | 67°F | 54°F | 7.3" |
| March | 52°F | 74°F | 62°F | 7.7" |
| April | 58°F | 80°F | 68°F | 9.7" |
| May | 63°F | 84°F | 73°F | 10.8" |
| June | 71°F | 90°F | 80°F | 6.2" |
| July | 72°F | 90°F | 80°F | 5.8" |
| August | 72°F | 90°F | 80°F | 9.5" |
| September | 69°F | 89°F | 77°F | 8.0" |
| October | 58°F | 82°F | 69°F | 24.8" |
| November | 47°F | 71°F | 57°F | 9.5" |
| December | 46°F | 66°F | 54°F | 10.8" |
| Index | Centreville | Mississippi | National |
| Air quality index | 46 | 40 | 50 |
| Pollution index | 1,020,900 | 1,380,848 | 5,066,862 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 227 |
| Days with moderate air quality | 131 |
| Days w/ poor A.Q. for sensitive groups | 7 |
| Days with unhealthy air quality |
| Pollutant | Total |
| Arsenic | 0.001% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.001% |
| Mercury | 0.010% |
| City, State | Population | Air Quality Index | National Avg. |
| Norwood, LA | 287 | 46 | 8% |
| Woodville, MS | 1,034 | 46 | 8% |
| Wilson, LA | 559 | 46 | 8% |
| Crosby, MS | 408 | 46 | 8% |
| Gloster, MS | 1,142 | 46 | 8% |
| Centreville, MS | 1,667 | 46 | 8% |
| City, State | Population | Air Quality Index | National Avg. |
| Meade, KS | 1,667 | 6 | 88% |
| Wayland, NY | 1,667 | 30 | 40% |
| Rosebud, SD | 1,668 | 43 | 14% |
| Marissa, IL | 1,666 | 60 | 20% |
| Oakwood, IL | 1,666 | 36 | 28% |
| Centreville, MS | 1,667 | 46 | 8% |