| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 32°F | 58°F | 44°F | 6.9" |
| February | 34°F | 59°F | 44°F | 6.9" |
| March | 42°F | 70°F | 54°F | 10.5" |
| April | 45°F | 74°F | 58°F | 3.7" |
| May | 54°F | 83°F | 68°F | 2.8" |
| June | 65°F | 90°F | 76°F | 5.4" |
| July | 69°F | 89°F | 77°F | 19.2" |
| August | 71°F | 94°F | 80°F | 5.4" |
| September | 64°F | 89°F | 74°F | 9.9" |
| October | 51°F | 77°F | 62°F | 0.9" |
| November | 40°F | 68°F | 52°F | 6.1" |
| December | 33°F | 56°F | 43°F | 5.6" |
| Index | Glencoe | Alabama | National |
| Air quality index | 43 | 37 | 42 |
| Pollution index | 2,295,500 | 3,012,339 | 2,726,193 |
| Measurement | Total |
| Days measured | 279 |
| Days with good air quality | 232 |
| Days with moderate air quality | 47 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.002% |
| Benzene | 0.030% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.010% |
| Mercury | 0.002% |
| City | Population | Air Quality Index | National Avg. |
| Jacksonville, AL | 12,796 | 43 | 14.0% |
| Attalla, AL | 5,885 | 43 | 14.0% |
| Ridgeville, AL | 114 | 43 | 14.0% |
| Gadsden, AL | 35,224 | 43 | 14.0% |
| Reece City, AL | 851 | 43 | 14.0% |
| Glencoe, AL | 5,125 | 43 | 14.0% |
| City | Population | Air Quality Index | National Avg. |
| Daleville, AL | 5,125 | 35 | 30.0% |
| New Martinsville, WV | 5,123 | 39 | 22.0% |
| Thatcher, AZ | 5,122 | 47 | 6.0% |
| Homestead Meadows North, TX | 5,121 | 53 | 6.0% |
| Spirit Lake, IA | 5,130 | 32 | 36.0% |
| Glencoe, AL | 5,125 | 43 | 14.0% |
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