| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 33°F | 54°F | 42°F | 8.0" |
| February | 34°F | 56°F | 44°F | 7.2" |
| March | 43°F | 67°F | 54°F | 7.5" |
| April | 50°F | 75°F | 62°F | 7.6" |
| May | 57°F | 81°F | 68°F | 6.5" |
| June | 66°F | 89°F | 76°F | 5.7" |
| July | 69°F | 90°F | 78°F | 8.6" |
| August | 69°F | 90°F | 78°F | 7.2" |
| September | 62°F | 84°F | 72°F | 7.1" |
| October | 50°F | 75°F | 61°F | 4.3" |
| November | 38°F | 64°F | 49°F | 3.3" |
| December | 36°F | 56°F | 45°F | 11.8" |
| Index | Gadsden | 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. |
| Attalla, AL | 5,885 | 43 | 14.0% |
| Egypt, AL | 944 | 43 | 14.0% |
| Ridgeville, AL | 114 | 43 | 14.0% |
| Coats Bend, AL | 1,063 | 43 | 14.0% |
| Rainbow City, AL | 9,601 | 43 | 14.0% |
| Gadsden, AL | 35,224 | 43 | 14.0% |
| City | Population | Air Quality Index | National Avg. |
| Menlo Park, CA | 35,211 | 43 | 14.0% |
| Westmont, CA | 35,188 | 72 | 44.0% |
| Bell, CA | 35,301 | 72 | 44.0% |
| Tooele, UT | 35,313 | 51 | 2.0% |
| Buenaventura Lakes, FL | 35,117 | 39 | 22.0% |
| Gadsden, AL | 35,224 | 43 | 14.0% |
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