| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 46°F | 63°F | 55°F | 7.4" |
| February | 45°F | 65°F | 54°F | 7.2" |
| March | 51°F | 73°F | 62°F | 8.7" |
| April | 55°F | 77°F | 66°F | 14.0" |
| May | 64°F | 86°F | 76°F | 1.6" |
| June | 72°F | 91°F | 81°F | 11.2" |
| July | 75°F | 90°F | 82°F | 5.8" |
| August | 76°F | 94°F | 84°F | 7.5" |
| September | 72°F | 89°F | 81°F | 15.1" |
| October | 61°F | 80°F | 71°F | 12.2" |
| November | 51°F | 70°F | 61°F | 9.6" |
| December | 46°F | 64°F | 55°F | 10.6" |
| Index | Heath | Alabama | National |
| Air quality index | 35 | 37 | 42 |
| Pollution index | 1,560,990 | 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 | 0.010% |
| Mercury | 0.001% |
| City | Population | Air Quality Index | National Avg. |
| Carolina, AL | 252 | 31 | 38.0% |
| River Falls, AL | 551 | 31 | 38.0% |
| Libertyville, AL | 45 | 31 | 38.0% |
| Andalusia, AL | 8,719 | 31 | 38.0% |
| Red Level, AL | 363 | 31 | 38.0% |
| Heath, AL | 293 | 35 | 30.0% |
| City | Population | Air Quality Index | National Avg. |
| Harding-Birch Lakes, AK | 293 | 38 | 24.0% |
| Lower Kalskag, AK | 293 | 31 | 38.0% |
| Elfrida, AZ | 293 | 45 | 10.0% |
| Clear Creek, CA | 293 | 46 | 8.0% |
| Monterey Park Tract, CA | 293 | 49 | 2.0% |
| Heath, AL | 293 | 35 | 30.0% |
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