| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 29°F | 46°F | 36°F | 6.6" |
| February | 30°F | 49°F | 38°F | 4.5" |
| March | 39°F | 60°F | 48°F | 6.1" |
| April | 47°F | 70°F | 58°F | 6.7" |
| May | 55°F | 76°F | 65°F | 6.9" |
| June | 62°F | 83°F | 72°F | 6.7" |
| July | 65°F | 85°F | 74°F | 7.9" |
| August | 65°F | 84°F | 73°F | 9.1" |
| September | 59°F | 79°F | 68°F | 6.9" |
| October | 48°F | 69°F | 57°F | 7.1" |
| November | 38°F | 59°F | 47°F | 6.1" |
| December | 34°F | 51°F | 41°F | 6.9" |
| Index | Bristol | Tennessee | National |
| Air quality index | 45 | 76 | 42 |
| Pollution index | 1,072,440 | 2,454,916 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 236 |
| Days with moderate air quality | 108 |
| Days w/ poor A.Q. for sensitive groups | 21 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.040% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.010% |
| Mercury | 0.001% |
| City | Population | Air Quality Index | National Avg. |
| Bristol, VA | 17,059 | 45 | 10.0% |
| Oak Grove CDP (Sumner County), TN | 215 | 45 | 10.0% |
| Nickelsville, VA | 359 | 45 | 10.0% |
| Oak Grove, TN | 4,353 | 45 | 10.0% |
| Walnut Hill, TN | 2,534 | 45 | 10.0% |
| Bristol, TN | 26,973 | 45 | 10.0% |
| City | Population | Air Quality Index | National Avg. |
| Belmont, CA | 26,963 | 43 | 14.0% |
| Marshalltown, IA | 26,957 | 37 | 26.0% |
| Maryland Heights, MO | 26,996 | 54 | 8.0% |
| West Chicago, IL | 26,998 | 55 | 10.0% |
| New London, CT | 27,001 | 37 | 26.0% |
| Bristol, TN | 26,973 | 45 | 10.0% |
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