| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 12°F | 73°F | 45°F | 3.8" |
| February | 16°F | 72°F | 47°F | 4.5" |
| March | 21°F | 87°F | 55°F | 4.8" |
| April | 28°F | 86°F | 62°F | 4.1" |
| May | 44°F | 93°F | 69°F | 2.8" |
| June | 57°F | 98°F | 78°F | 2.9" |
| July | 61°F | 97°F | 79°F | 6.1" |
| August | 61°F | 104°F | 80°F | 5.7" |
| September | 50°F | 91°F | 74°F | 3.6" |
| October | 33°F | 87°F | 63°F | 4.0" |
| November | 23°F | 82°F | 53°F | 3.3" |
| December | 18°F | 77°F | 46°F | 5.4" |
| Index | Atlanta | 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. |
| Avondale Estates, GA | 3,095 | 52 | 4% |
| Chamblee, GA | 27,862 | 52 | 4% |
| Decatur, GA | 21,210 | 52 | 4% |
| East Point, GA | 35,477 | 52 | 4% |
| Gresham Park, GA | 7,971 | 52 | 4% |
| Atlanta, GA | 456,378 | 52 | 4% |
| City, State | Population | Air Quality Index | National Avg. |
| Virginia Beach, VA | 449,733 | 39 | 22% |
| Colorado Springs, CO | 448,759 | 44 | 12% |
| Omaha, NE | 443,072 | 48 | 4% |
| Long Beach, CA | 469,793 | 74 | 48% |
| Mesa, AZ | 470,456 | 74 | 48% |
| Atlanta, GA | 456,378 | 52 | 4% |