| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 34°F | 57°F | 45°F | 3.4" |
| February | 35°F | 59°F | 46°F | 3.4" |
| March | 42°F | 66°F | 53°F | 3.4" |
| April | 51°F | 75°F | 63°F | 3.4" |
| May | 59°F | 81°F | 69°F | 3.9" |
| June | 68°F | 88°F | 77°F | 5.2" |
| July | 71°F | 90°F | 80°F | 6.4" |
| August | 71°F | 89°F | 79°F | 7.0" |
| September | 66°F | 84°F | 74°F | 6.5" |
| October | 55°F | 76°F | 64°F | 5.0" |
| November | 43°F | 67°F | 54°F | 3.8" |
| December | 38°F | 61°F | 49°F | 4.1" |
| Index | Alliance | 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. |
| Bridgeton, NC | 329 | 0 | 100.0% |
| Aurora, NC | 772 | 0 | 100.0% |
| Hobucken, NC | 42 | 0 | 100.0% |
| Arapahoe, NC | 397 | 37 | 26.0% |
| James City, NC | 5,378 | 37 | 26.0% |
| Alliance, NC | 1,104 | 37 | 26.0% |
| City | Population | Air Quality Index | National Avg. |
| Archer, FL | 1,104 | 35 | 30.0% |
| Hiawassee, GA | 1,104 | 37 | 26.0% |
| Cavetown, MD | 1,104 | 40 | 20.0% |
| Nashwauk, MN | 1,104 | 35 | 30.0% |
| Gerald, MO | 1,104 | 39 | 22.0% |
| Alliance, NC | 1,104 | 37 | 26.0% |
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