| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 33°F | 55°F | 43°F | 4.1" |
| February | 35°F | 59°F | 46°F | 4.2" |
| March | 43°F | 68°F | 55°F | 4.0" |
| April | 50°F | 76°F | 63°F | 4.2" |
| May | 58°F | 82°F | 70°F | 3.9" |
| June | 67°F | 90°F | 78°F | 3.2" |
| July | 70°F | 91°F | 79°F | 4.2" |
| August | 70°F | 90°F | 79°F | 4.0" |
| September | 63°F | 85°F | 73°F | 3.4" |
| October | 51°F | 75°F | 62°F | 3.3" |
| November | 40°F | 66°F | 52°F | 3.1" |
| December | 38°F | 59°F | 47°F | 5.1" |
| Index | Mableton | Georgia | National |
| Air quality index | 52 | 41 | 50 |
| Pollution index | 19,982,200 | 3,237,553 | 5,066,862 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 175 |
| Days with moderate air quality | 187 |
| Days w/ poor A.Q. for sensitive groups | 2 |
| Days with unhealthy air quality | 1 |
| Pollutant | Total |
| Arsenic | 0.210% |
| Benzene | 0.260% |
| Carbon Tetrachloride | 0.050% |
| Lead | 0.100% |
| Mercury | 0.010% |
| City, State | Population | Air Quality Index | National Avg. |
| College Park, GA | 14,434 | 52 | 4% |
| Dunwoody, GA | 48,128 | 52 | 4% |
| Gresham Park, GA | 7,971 | 52 | 4% |
| Lake City, GA | 2,712 | 52 | 4% |
| Powder Springs, GA | 14,596 | 52 | 4% |
| Mableton, GA | 38,839 | 52 | 4% |
| City, State | Population | Air Quality Index | National Avg. |
| Pacifica, CA | 38,844 | 53 | 6% |
| Tupelo, MS | 38,856 | 35 | 30% |
| Marumsco, VA | 38,815 | 49 | 2% |
| Huber Heights, OH | 38,795 | 48 | 4% |
| South Miami Heights, FL | 38,736 | 41 | 18% |
| Mableton, GA | 38,839 | 52 | 4% |