| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 39°F | 60°F | 48°F | 5.0" |
| February | 41°F | 63°F | 50°F | 5.2" |
| March | 49°F | 72°F | 59°F | 5.7" |
| April | 56°F | 79°F | 66°F | 5.5" |
| May | 63°F | 84°F | 73°F | 4.9" |
| June | 71°F | 91°F | 80°F | 3.6" |
| July | 73°F | 92°F | 81°F | 4.4" |
| August | 73°F | 93°F | 82°F | 4.0" |
| September | 68°F | 89°F | 77°F | 3.6" |
| October | 55°F | 79°F | 66°F | 3.5" |
| November | 46°F | 69°F | 56°F | 4.0" |
| December | 41°F | 62°F | 50°F | 5.3" |
| Index | Ridgeland | Mississippi | National |
| Air quality index | 44 | 40 | 42 |
| Pollution index | 5,784,070 | 1,514,109 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 256 |
| Days with moderate air quality | 109 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.005% |
| Benzene | 0.070% |
| Carbon Tetrachloride | 0.020% |
| Lead | 0.030% |
| Mercury | 0.003% |
| City | Population | Air Quality Index | National Avg. |
| Richland, MS | 7,203 | 44 | 12.0% |
| Canton, MS | 11,943 | 44 | 12.0% |
| Jackson, MS | 163,778 | 44 | 12.0% |
| Flowood, MS | 9,213 | 44 | 12.0% |
| Madison, MS | 25,650 | 44 | 12.0% |
| Ridgeland, MS | 24,194 | 44 | 12.0% |
| City | Population | Air Quality Index | National Avg. |
| Fort Dodge, IA | 24,168 | 37 | 26.0% |
| Loma Linda, CA | 24,239 | 89 | 78.0% |
| North Potomac, MD | 24,146 | 47 | 6.0% |
| San Fernando, CA | 24,244 | 72 | 44.0% |
| San Benito, TX | 24,259 | 44 | 12.0% |
| Ridgeland, MS | 24,194 | 44 | 12.0% |
Here are the best places to live in Mississippi
These are the largest cities in Mississippi
Check out the 10 most dangerous cities in Mississippi
See the best places to live in Ridgeland