| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 33°F | 54°F | 43°F | 8.0" |
| February | 35°F | 57°F | 45°F | 6.6" |
| March | 44°F | 67°F | 55°F | 6.9" |
| April | 51°F | 75°F | 63°F | 8.0" |
| May | 59°F | 81°F | 70°F | 8.0" |
| June | 68°F | 88°F | 78°F | 7.0" |
| July | 70°F | 89°F | 79°F | 8.2" |
| August | 70°F | 89°F | 79°F | 7.2" |
| September | 64°F | 83°F | 73°F | 9.0" |
| October | 52°F | 74°F | 62°F | 9.1" |
| November | 41°F | 64°F | 52°F | 8.1" |
| December | 38°F | 57°F | 47°F | 9.2" |
| Index | Fair Oaks | Georgia | National |
| Air quality index | 52 | 41 | 42 |
| Pollution index | 14,162,500 | 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 | 0.220% |
| Benzene | 0.180% |
| Carbon Tetrachloride | 0.040% |
| Lead | 0.100% |
| Mercury | 0.040% |
| City | Population | Air Quality Index | National Avg. |
| Emerson, GA | 1,921 | 44 | 12.0% |
| Powder Springs, GA | 15,390 | 52 | 4.0% |
| Roswell, GA | 94,884 | 52 | 4.0% |
| Decatur, GA | 24,814 | 52 | 4.0% |
| Mableton, GA | 41,647 | 52 | 4.0% |
| Fair Oaks, GA | 9,447 | 52 | 4.0% |
| City | Population | Air Quality Index | National Avg. |
| Sunbury, PA | 9,446 | 35 | 30.0% |
| Leeds and the Thousand Islands, ON | 9,445 | n/a | |
| Hackettstown, NJ | 9,440 | 34 | 32.0% |
| Amityville, NY | 9,440 | 51 | 2.0% |
| Mount Airy, MD | 9,439 | 46 | 8.0% |
| Fair Oaks, GA | 9,447 | 52 | 4.0% |
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