| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 27°F | 50°F | 38°F | 6.0" |
| February | 27°F | 48°F | 37°F | 4.8" |
| March | 34°F | 58°F | 45°F | 5.4" |
| April | 46°F | 71°F | 58°F | 11.0" |
| May | 57°F | 80°F | 68°F | 9.3" |
| June | 63°F | 85°F | 74°F | 8.0" |
| July | 68°F | 87°F | 77°F | 17.4" |
| August | 64°F | 85°F | 74°F | 10.8" |
| September | 59°F | 80°F | 69°F | 12.6" |
| October | 50°F | 72°F | 60°F | 6.7" |
| November | 35°F | 59°F | 47°F | 7.0" |
| December | 33°F | 54°F | 43°F | 10.4" |
| Index | Carrollton | Virginia | National |
| Air quality index | 40 | 58 | 42 |
| Pollution index | 1,644,650 | 1,561,881 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 317 |
| Days with moderate air quality | 48 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.070% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.030% |
| Mercury | 0.001% |
| City | Population | Air Quality Index | National Avg. |
| Newport News, VA | 179,582 | 40 | 20.0% |
| Bethel Manor, VA | 4,666 | 40 | 20.0% |
| Windsor, VA | 2,748 | 40 | 20.0% |
| Poquoson, VA | 12,121 | 40 | 20.0% |
| Rushmere, VA | 1,001 | 40 | 20.0% |
| Carrollton, VA | 6,340 | 40 | 20.0% |
| City | Population | Air Quality Index | National Avg. |
| Wilmore, KY | 6,339 | 42 | 16.0% |
| Swarthmore, PA | 6,339 | 51 | 2.0% |
| Skowhegan, ME | 6,341 | 28 | 44.0% |
| Braidwood, IL | 6,338 | 0 | 100.0% |
| Peachland, BC | 6,336 | n/a | |
| Carrollton, VA | 6,340 | 40 | 20.0% |
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