| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 42°F | 61°F | 51°F | 9.0" |
| February | 45°F | 63°F | 53°F | 8.3" |
| March | 51°F | 68°F | 59°F | 15.5" |
| April | 59°F | 76°F | 68°F | 24.7" |
| May | 68°F | 83°F | 75°F | 13.6" |
| June | 73°F | 89°F | 81°F | 9.9" |
| July | 75°F | 89°F | 82°F | 15.2" |
| August | 75°F | 91°F | 82°F | 10.1" |
| September | 71°F | 88°F | 79°F | 9.4" |
| October | 60°F | 80°F | 70°F | 11.9" |
| November | 49°F | 70°F | 59°F | 7.3" |
| December | 46°F | 64°F | 54°F | 10.7" |
| Index | Mary Esther | Florida | National |
| Air quality index | 31 | 35 | 42 |
| Pollution index | 3,606,460 | 7,570,785 | 2,726,193 |
| Measurement | Total |
| Days measured | 363 |
| Days with good air quality | 357 |
| Days with moderate air quality | 6 |
| Days w/ poor A.Q. for sensitive groups | |
| Days with unhealthy air quality |
| Pollutant | Total |
| Arsenic | 0.002% |
| Benzene | 0.050% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.010% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Niceville, FL | 15,619 | 31 | 38.0% |
| Wright, FL | 24,671 | 31 | 38.0% |
| Fort Walton Beach, FL | 22,144 | 31 | 38.0% |
| Ocean City, FL | 5,969 | 31 | 38.0% |
| Cinco Bayou, FL | 670 | 31 | 38.0% |
| Mary Esther, FL | 4,370 | 31 | 38.0% |
| City | Population | Air Quality Index | National Avg. |
| Deep River, ON | 4,370 | n/a | |
| Columbia-Shuswap D, BC | 4,370 | n/a | |
| Hamburg, PA | 4,369 | 42 | 16.0% |
| North Terre Haute, IN | 4,371 | 45 | 10.0% |
| Isle of Palms, SC | 4,371 | 38 | 24.0% |
| Mary Esther, FL | 4,370 | 31 | 38.0% |
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