| 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 | Trinity | 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. |
| Mooresville, AL | 87 | 41 | 18.0% |
| Moulton, AL | 3,237 | 41 | 18.0% |
| Athens, AL | 26,686 | 41 | 18.0% |
| Priceville, AL | 3,682 | 41 | 18.0% |
| North Courtland, AL | 783 | 41 | 18.0% |
| Trinity, AL | 2,593 | 41 | 18.0% |
| City | Population | Air Quality Index | National Avg. |
| Devola, OH | 2,593 | 35 | 30.0% |
| Weatherly, PA | 2,593 | 42 | 16.0% |
| Seekaskootch 119, SK | 2,593 | n/a | |
| Wales, WI | 2,592 | 44 | 12.0% |
| Greater Madawaska, ON | 2,592 | n/a | |
| Trinity, AL | 2,593 | 41 | 18.0% |
Here are the best places to live in Alabama
Check out the 10 most dangerous cities in Alabama
Check out the 10 safest cities in Alabama
These are the largest cities in Alabama