| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 38°F | 56°F | 47°F | 3.6" |
| February | 38°F | 57°F | 47°F | 3.9" |
| March | 45°F | 63°F | 54°F | 2.9" |
| April | 55°F | 71°F | 63°F | 3.4" |
| May | 63°F | 78°F | 70°F | 3.9" |
| June | 71°F | 84°F | 78°F | 3.6" |
| July | 74°F | 86°F | 80°F | 5.1" |
| August | 73°F | 86°F | 80°F | 6.8" |
| September | 69°F | 82°F | 75°F | 9.7" |
| October | 58°F | 75°F | 66°F | 4.8" |
| November | 46°F | 66°F | 56°F | 4.4" |
| December | 42°F | 61°F | 51°F | 3.9" |
| Index | Gloucester | North Carolina | National |
| Air quality index | 37 | 35 | 42 |
| Pollution index | 3,449,020 | 2,789,538 | 2,726,193 |
| Measurement | Total |
| Days measured | 259 |
| Days with good air quality | 239 |
| Days with moderate air quality | 20 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.050% |
| Benzene | 0.030% |
| Carbon Tetrachloride | 0.040% |
| Lead | 0.030% |
| Mercury | 0.010% |
| City | Population | Air Quality Index | National Avg. |
| Davis, NC | 226 | 37 | 26.0% |
| Atlantic Beach, NC | 1,870 | 37 | 26.0% |
| Harkers Island, NC | 1,314 | 37 | 26.0% |
| Atlantic, NC | 608 | 37 | 26.0% |
| Marshallberg, NC | 412 | 37 | 26.0% |
| Gloucester, NC | 484 | 37 | 26.0% |
| City | Population | Air Quality Index | National Avg. |
| Mokelumne Hill, CA | 484 | 39 | 22.0% |
| Yatesville, GA | 484 | 38 | 24.0% |
| Sun River Terrace, IL | 484 | 55 | 10.0% |
| Pennock, MN | 484 | 32 | 36.0% |
| Vermillion, MN | 484 | 37 | 26.0% |
| Gloucester, NC | 484 | 37 | 26.0% |
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