| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 36°F | 52°F | 43°F | 4.5" |
| February | 32°F | 48°F | 39°F | 3.5" |
| March | 39°F | 58°F | 47°F | 3.7" |
| April | 48°F | 66°F | 57°F | 7.6" |
| May | 56°F | 72°F | 64°F | 6.5" |
| June | 67°F | 83°F | 74°F | 11.3" |
| July | 72°F | 88°F | 79°F | 6.5" |
| August | 72°F | 87°F | 79°F | 7.8" |
| September | 66°F | 82°F | 74°F | 3.2" |
| October | 58°F | 73°F | 65°F | 16.2" |
| November | 44°F | 63°F | 52°F | 6.3" |
| December | 36°F | 52°F | 43°F | 6.5" |
| Index | Hampton | Virginia | National |
| Air quality index | 40 | 58 | 50 |
| Pollution index | 4,048,910 | 1,533,792 | 5,066,862 |
| 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 | 0.060% |
| Benzene | 0.030% |
| Carbon Tetrachloride | 0.010% |
| Lead | 0.020% |
| Mercury | 0.130% |
| City, State | Population | Air Quality Index | National Avg. |
| Poquoson, VA | 12,068 | 40 | 20% |
| Bethel Manor, VA | 4,181 | 40 | 20% |
| Portsmouth, VA | 96,071 | 40 | 20% |
| Carrollton, VA | 5,481 | 40 | 20% |
| Newport News, VA | 181,606 | 40 | 20% |
| Hampton, VA | 136,789 | 40 | 20% |
| City, State | Population | Air Quality Index | National Avg. |
| Bellevue, WA | 136,718 | 45 | 10% |
| McAllen, TX | 138,475 | 42 | 16% |
| Warren, MI | 135,069 | 56 | 12% |
| Killeen, TX | 138,745 | 42 | 16% |
| West Valley City, UT | 134,609 | 51 | 2% |
| Hampton, VA | 136,789 | 40 | 20% |
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