| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 20°F | 78°F | 49°F | 4.1" |
| February | 19°F | 82°F | 51°F | 4.0" |
| March | 28°F | 86°F | 59°F | 4.1" |
| April | 34°F | 90°F | 65°F | 3.2" |
| May | 46°F | 92°F | 73°F | 4.0" |
| June | 59°F | 102°F | 80°F | 1.5" |
| July | 63°F | 102°F | 81°F | 5.0" |
| August | 62°F | 105°F | 82°F | 3.5" |
| September | 50°F | 96°F | 77°F | 3.5" |
| October | 34°F | 95°F | 66°F | 4.4" |
| November | 26°F | 85°F | 56°F | 2.0" |
| December | 19°F | 81°F | 50°F | 5.0" |
| Index | Country Club | Jackson | Mississippi |
| Air quality index | 42 | 42 | 40 |
| Pollution index | 5,784,070 | 5,784,070 | 1,380,848 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 253 |
| Days with moderate air quality | 112 |
| Days w/ poor A.Q. for sensitive groups | |
| Days with unhealthy air quality |
| Pollutant | Total |
| Arsenic | 0.005% |
| Benzene | 0.070% |
| Carbon Tetrachloride | 0.020% |
| Lead | 0.030% |
| Mercury | 0.003% |
| City, State | Population | Air Quality Index | National Avg. |
| Byram, MS | 11,610 | 42 | 16% |
| Florence, MS | 4,313 | 42 | 16% |
| Raymond, MS | 1,897 | 42 | 16% |
| Cleary, MS | 1,100 | 42 | 16% |
| Flowood, MS | 8,532 | 42 | 16% |
| Jackson, MS | 172,039 | 42 | 16% |
| City, State | Population | Air Quality Index | National Avg. |
| Santa Rosa, CA | 173,165 | 35 | 30% |
| Rancho Cucamonga, CA | 173,309 | 85 | 70% |
| Oceanside, CA | 173,829 | 61 | 22% |
| Cape Coral, FL | 170,063 | 33 | 34% |
| Vancouver, WA | 169,982 | 38 | 24% |
| Jackson, MS | 172,039 | 42 | 16% |