| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 34°F | 57°F | 45°F | 7.1" |
| February | 33°F | 57°F | 44°F | 5.8" |
| March | 41°F | 68°F | 53°F | 7.7" |
| April | 44°F | 73°F | 58°F | 5.2" |
| May | 52°F | 82°F | 67°F | 2.6" |
| June | 63°F | 89°F | 76°F | 8.2" |
| July | 68°F | 88°F | 76°F | 5.8" |
| August | 69°F | 94°F | 80°F | 6.8" |
| September | 62°F | 88°F | 73°F | 1.8" |
| October | 51°F | 76°F | 63°F | 4.2" |
| November | 40°F | 66°F | 52°F | 7.0" |
| December | 33°F | 56°F | 44°F | 8.4" |
| Index | Acworth | 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% |
| Euharlee, GA | 4,348 | 44 | 12.0% |
| Cartersville, GA | 21,331 | 44 | 12.0% |
| Hiram, GA | 4,021 | 52 | 4.0% |
| Marietta, GA | 60,687 | 52 | 4.0% |
| Acworth, GA | 22,683 | 52 | 4.0% |
| City | Population | Air Quality Index | National Avg. |
| West Carson, CA | 22,697 | 72 | 44.0% |
| Valinda, CA | 22,665 | 72 | 44.0% |
| New Brighton, MN | 22,663 | 46 | 8.0% |
| Machesney Park, IL | 22,709 | 42 | 16.0% |
| Griffin, GA | 22,724 | 52 | 4.0% |
| Acworth, GA | 22,683 | 52 | 4.0% |
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