| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 32°F | 56°F | 43°F | 3.8" |
| February | 34°F | 59°F | 45°F | 4.6" |
| March | 42°F | 69°F | 54°F | 4.4" |
| April | 49°F | 76°F | 62°F | 3.9" |
| May | 56°F | 82°F | 69°F | 3.2" |
| June | 65°F | 90°F | 77°F | 3.1" |
| July | 68°F | 91°F | 78°F | 4.5" |
| August | 68°F | 90°F | 78°F | 4.2" |
| September | 62°F | 85°F | 72°F | 3.5" |
| October | 49°F | 76°F | 61°F | 3.4" |
| November | 38°F | 66°F | 51°F | 3.5" |
| December | 37°F | 60°F | 47°F | 6.1" |
| Index | Experiment | Georgia | National |
| Air quality index | 52 | 41 | 42 |
| Pollution index | 4,626,350 | 1,874,972 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 162 |
| Days with moderate air quality | 184 |
| Days w/ poor A.Q. for sensitive groups | 18 |
| Days with unhealthy air quality | 1 |
| Pollutant | Total |
| Arsenic | 0.040% |
| Benzene | 0.070% |
| Carbon Tetrachloride | 0.020% |
| Lead | 0.020% |
| Mercury | 0.002% |
| City | Population | Air Quality Index | National Avg. |
| Zebulon, GA | 1,427 | 38 | 24.0% |
| Orchard Hill, GA | 242 | 38 | 24.0% |
| Milner, GA | 758 | 38 | 24.0% |
| Hampton, GA | 7,887 | 52 | 4.0% |
| Woolsey, GA | 195 | 52 | 4.0% |
| Experiment, GA | 2,915 | 52 | 4.0% |
| City | Population | Air Quality Index | National Avg. |
| Sumner, IL | 2,916 | 36 | 28.0% |
| Rothsville, PA | 2,916 | 45 | 10.0% |
| East Norwich, NY | 2,913 | 51 | 2.0% |
| Marshall, VA | 2,913 | 38 | 24.0% |
| Heritage Lake, IN | 2,917 | 54 | 8.0% |
| Experiment, GA | 2,915 | 52 | 4.0% |
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