| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 43°F | 63°F | 52°F | 10.7" |
| February | 43°F | 64°F | 52°F | 7.8" |
| March | 49°F | 73°F | 60°F | 12.4" |
| April | 52°F | 75°F | 63°F | 16.3" |
| May | 61°F | 85°F | 73°F | 4.1" |
| June | 70°F | 90°F | 79°F | 9.3" |
| July | 73°F | 90°F | 80°F | 10.2" |
| August | 74°F | 93°F | 81°F | 12.4" |
| September | 69°F | 89°F | 78°F | 9.6" |
| October | 58°F | 80°F | 68°F | 8.7" |
| November | 48°F | 71°F | 58°F | 13.2" |
| December | 42°F | 63°F | 51°F | 10.5" |
| Index | Hartford | Alabama | National |
| Air quality index | 35 | 37 | 42 |
| Pollution index | 1,136,440 | 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 | 0.003% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Esto, FL | 309 | 35 | 30.0% |
| Clayhatchee, AL | 744 | 35 | 30.0% |
| Grimes, AL | 665 | 35 | 30.0% |
| Pinckard, AL | 629 | 35 | 30.0% |
| Eunola, AL | 70 | 35 | 30.0% |
| Hartford, AL | 2,584 | 35 | 30.0% |
| City | Population | Air Quality Index | National Avg. |
| Dulce, NM | 2,584 | 44 | 12.0% |
| Rugby, ND | 2,583 | 36 | 28.0% |
| Swedesboro, NJ | 2,583 | 51 | 2.0% |
| Mountain View CDP, CA | 2,585 | 43 | 14.0% |
| Sterling, KS | 2,585 | 40 | 20.0% |
| Hartford, AL | 2,584 | 35 | 30.0% |
Here are the best places to live in Alabama
See the best places to live in Hartford
Check out the 10 most dangerous cities in Alabama
Most Dangerous States In The US