| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 38°F | 63°F | 49°F | 5.6" |
| February | 39°F | 65°F | 51°F | 5.2" |
| March | 47°F | 73°F | 59°F | 4.4" |
| April | 53°F | 80°F | 66°F | 4.1" |
| May | 60°F | 86°F | 72°F | 4.0" |
| June | 69°F | 92°F | 79°F | 3.5" |
| July | 71°F | 92°F | 80°F | 4.8" |
| August | 71°F | 92°F | 80°F | 5.9" |
| September | 66°F | 88°F | 75°F | 3.8" |
| October | 54°F | 80°F | 65°F | 3.4" |
| November | 43°F | 71°F | 55°F | 3.4" |
| December | 42°F | 65°F | 52°F | 7.0" |
| Index | McKenzie | Alabama | National |
| Air quality index | 52 | 37 | 42 |
| Pollution index | 1,560,990 | 3,012,339 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 171 |
| Days with moderate air quality | 193 |
| Days w/ poor A.Q. for sensitive groups | 1 |
| 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. |
| River Falls, AL | 551 | 31 | 38.0% |
| Red Level, AL | 363 | 31 | 38.0% |
| Gantt, AL | 174 | 35 | 30.0% |
| Evergreen, AL | 3,591 | 41 | 18.0% |
| Georgiana, AL | 1,597 | 52 | 4.0% |
| McKenzie, AL | 790 | 52 | 4.0% |
| City | Population | Air Quality Index | National Avg. |
| Norris Canyon, CA | 790 | 40 | 20.0% |
| Jetmore, KS | 790 | 15 | 70.0% |
| McRoberts, KY | 790 | 45 | 10.0% |
| Cedar Grove, NM | 790 | 53 | 6.0% |
| Dexter, NY | 790 | 35 | 30.0% |
| McKenzie, AL | 790 | 52 | 4.0% |
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