| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 37°F | 57°F | 46°F | 3.6" |
| February | 37°F | 60°F | 47°F | 4.5" |
| March | 44°F | 68°F | 55°F | 4.3" |
| April | 52°F | 76°F | 63°F | 4.5" |
| May | 60°F | 82°F | 70°F | 6.1" |
| June | 69°F | 88°F | 77°F | 8.2" |
| July | 72°F | 91°F | 80°F | 8.1" |
| August | 71°F | 89°F | 79°F | 6.5" |
| September | 66°F | 84°F | 73°F | 5.3" |
| October | 54°F | 76°F | 64°F | 7.0" |
| November | 44°F | 66°F | 53°F | 7.3" |
| December | 41°F | 61°F | 50°F | 5.7" |
| Index | Brunswick | North Carolina | National |
| Air quality index | 30 | 35 | 42 |
| Pollution index | 4,252,890 | 2,789,538 | 2,726,193 |
| Measurement | Total |
| Days measured | 117 |
| Days with good air quality | 101 |
| Days with moderate air quality | 16 |
| Days w/ poor A.Q. for sensitive groups | |
| Days with unhealthy air quality |
| Pollutant | Total |
| Arsenic | 0.010% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.090% |
| Lead | 0.020% |
| Mercury | 0.004% |
| City | Population | Air Quality Index | National Avg. |
| Boardman, NC | 315 | 30 | 40.0% |
| Evergreen, NC | 125 | 30 | 40.0% |
| Cerro Gordo, NC | 322 | 30 | 40.0% |
| Hallsboro, NC | 444 | 30 | 40.0% |
| Chadbourn, NC | 2,038 | 30 | 40.0% |
| Brunswick, NC | 1,128 | 30 | 40.0% |
| City | Population | Air Quality Index | National Avg. |
| Brooklyn, CT | 1,128 | 33 | 34.0% |
| Colon, MI | 1,128 | 38 | 24.0% |
| Kissee Mills, MO | 1,128 | 18 | 64.0% |
| Shady Point, OK | 1,128 | 36 | 28.0% |
| Conestoga, PA | 1,128 | 45 | 10.0% |
| Brunswick, NC | 1,128 | 30 | 40.0% |
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