| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 48°F | 63°F | 55°F | 8.6" |
| February | 47°F | 64°F | 55°F | 5.6" |
| March | 54°F | 69°F | 62°F | 5.8" |
| April | 59°F | 75°F | 67°F | 23.1" |
| May | 67°F | 83°F | 76°F | 12.4" |
| June | 73°F | 88°F | 81°F | 8.5" |
| July | 76°F | 88°F | 82°F | 13.2" |
| August | 78°F | 91°F | 84°F | 6.8" |
| September | 73°F | 89°F | 81°F | 3.2" |
| October | 62°F | 80°F | 71°F | 12.1" |
| November | 54°F | 71°F | 62°F | 9.7" |
| December | 48°F | 65°F | 56°F | 8.8" |
| Index | Biloxi | Mississippi | National |
| Air quality index | 42 | 40 | 42 |
| Pollution index | 414,728 | 1,514,109 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 264 |
| Days with moderate air quality | 100 |
| Days w/ poor A.Q. for sensitive groups | 1 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.003% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.010% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Gulf Park Estates, MS | 6,238 | 32 | 36.0% |
| Vancleave, MS | 4,934 | 32 | 36.0% |
| D'Iberville, MS | 13,766 | 42 | 16.0% |
| Latimer, MS | 6,148 | 42 | 16.0% |
| Gulf Hills, MS | 8,824 | 42 | 16.0% |
| Biloxi, MS | 46,042 | 42 | 16.0% |
| City | Population | Air Quality Index | National Avg. |
| Quinte West, ON | 46,045 | n/a | |
| Hattiesburg, MS | 46,010 | 35 | 30.0% |
| Four Corners, FL | 45,946 | 39 | 22.0% |
| Huntington, WV | 46,139 | 42 | 16.0% |
| Horizon West, FL | 46,204 | 39 | 22.0% |
| Biloxi, MS | 46,042 | 42 | 16.0% |
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