| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 32°F | 52°F | 41°F | 5.0" |
| February | 34°F | 55°F | 44°F | 3.6" |
| March | 43°F | 66°F | 53°F | 4.4" |
| April | 51°F | 75°F | 62°F | 5.2" |
| May | 59°F | 81°F | 69°F | 4.5" |
| June | 67°F | 90°F | 78°F | 3.1" |
| July | 69°F | 91°F | 79°F | 4.3" |
| August | 68°F | 91°F | 78°F | 3.4" |
| September | 61°F | 85°F | 72°F | 2.9" |
| October | 50°F | 75°F | 61°F | 3.6" |
| November | 39°F | 64°F | 51°F | 3.7" |
| December | 36°F | 56°F | 45°F | 5.6" |
| Index | Athens | Alabama | National |
| Air quality index | 41 | 37 | 42 |
| Pollution index | 6,960,530 | 3,012,339 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 306 |
| Days with moderate air quality | 59 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.010% |
| Benzene | 0.100% |
| Carbon Tetrachloride | 0.060% |
| Lead | 0.030% |
| Mercury | 0.010% |
| City | Population | Air Quality Index | National Avg. |
| Lester, AL | 131 | 27 | 46.0% |
| Decatur, AL | 54,344 | 41 | 18.0% |
| Mooresville, AL | 87 | 41 | 18.0% |
| Trinity, AL | 2,593 | 41 | 18.0% |
| Hillsboro, AL | 590 | 41 | 18.0% |
| Athens, AL | 26,686 | 41 | 18.0% |
| City | Population | Air Quality Index | National Avg. |
| Bayonet Point, FL | 26,704 | 43 | 14.0% |
| Leisure City, FL | 26,708 | 41 | 18.0% |
| Lemon Grove, CA | 26,739 | 64 | 28.0% |
| Maple Valley, WA | 26,739 | 45 | 10.0% |
| Sanger, CA | 26,744 | 60 | 20.0% |
| Athens, AL | 26,686 | 41 | 18.0% |
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