| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 41°F | 64°F | 52°F | 6.1" |
| February | 43°F | 68°F | 54°F | 5.6" |
| March | 51°F | 76°F | 62°F | 5.0" |
| April | 57°F | 82°F | 69°F | 5.5" |
| May | 64°F | 88°F | 75°F | 4.5" |
| June | 72°F | 94°F | 82°F | 6.5" |
| July | 74°F | 95°F | 83°F | 5.6" |
| August | 74°F | 95°F | 83°F | 6.1" |
| September | 69°F | 90°F | 78°F | 4.3" |
| October | 58°F | 82°F | 69°F | 3.5" |
| November | 47°F | 73°F | 59°F | 3.8" |
| December | 45°F | 68°F | 55°F | 7.9" |
| Index | Opp | Alabama | National |
| Air quality index | 35 | 37 | 42 |
| Pollution index | 1,560,990 | 3,012,339 | 2,726,193 |
| Measurement | Total |
| Days measured | 280 |
| Days with good air quality | 256 |
| Days with moderate air quality | 24 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.001% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.010% |
| Mercury | 0.001% |
| City | Population | Air Quality Index | National Avg. |
| Andalusia, AL | 8,719 | 31 | 38.0% |
| Libertyville, AL | 45 | 31 | 38.0% |
| Babbie, AL | 514 | 35 | 30.0% |
| Onycha, AL | 115 | 35 | 30.0% |
| Gantt, AL | 174 | 35 | 30.0% |
| Opp, AL | 6,405 | 35 | 30.0% |
| City | Population | Air Quality Index | National Avg. |
| Wainwright, AB | 6,405 | n/a | |
| Tweed, ON | 6,406 | n/a | |
| Hampstead, MD | 6,403 | 46 | 8.0% |
| Millersville, TN | 6,403 | 45 | 10.0% |
| Kingston, RI | 6,407 | 44 | 12.0% |
| Opp, AL | 6,405 | 35 | 30.0% |
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