| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 34°F | 57°F | 44°F | 4.7" |
| February | 36°F | 60°F | 47°F | 4.5" |
| March | 44°F | 68°F | 55°F | 4.6" |
| April | 51°F | 76°F | 64°F | 4.6" |
| May | 60°F | 82°F | 71°F | 3.7" |
| June | 68°F | 89°F | 78°F | 4.3" |
| July | 71°F | 91°F | 80°F | 5.2" |
| August | 71°F | 90°F | 79°F | 5.3" |
| September | 65°F | 85°F | 74°F | 3.3" |
| October | 53°F | 76°F | 64°F | 3.4" |
| November | 42°F | 67°F | 54°F | 3.4" |
| December | 38°F | 59°F | 48°F | 6.2" |
| Index | College Park | Georgia | National |
| Air quality index | 52 | 41 | 42 |
| Pollution index | 531,544 | 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 | 0.020% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.060% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Hapeville, GA | 6,576 | 52 | 4.0% |
| Fayetteville, GA | 17,902 | 52 | 4.0% |
| Palmetto, GA | 4,802 | 52 | 4.0% |
| Avondale Estates, GA | 3,142 | 52 | 4.0% |
| Decatur, GA | 24,814 | 52 | 4.0% |
| College Park, GA | 14,479 | 52 | 4.0% |
| City | Population | Air Quality Index | National Avg. |
| Summerfield, MD | 14,477 | 40 | 20.0% |
| Greece, NY | 14,477 | 37 | 26.0% |
| Owosso, MI | 14,476 | 38 | 24.0% |
| Destin, FL | 14,482 | 31 | 38.0% |
| Batavia, NY | 14,490 | 37 | 26.0% |
| College Park, GA | 14,479 | 52 | 4.0% |
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