| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 25°F | 44°F | 34°F | 4.3" |
| February | 27°F | 46°F | 35°F | 2.7" |
| March | 35°F | 58°F | 45°F | 4.2" |
| April | 43°F | 68°F | 55°F | 5.1" |
| May | 52°F | 74°F | 62°F | 4.8" |
| June | 59°F | 82°F | 70°F | 4.6" |
| July | 62°F | 83°F | 72°F | 7.0" |
| August | 62°F | 82°F | 71°F | 6.0" |
| September | 55°F | 77°F | 65°F | 5.5" |
| October | 44°F | 67°F | 54°F | 5.6" |
| November | 34°F | 57°F | 44°F | 3.8" |
| December | 30°F | 49°F | 38°F | 3.6" |
| Index | Richlands | Virginia | National |
| Air quality index | 45 | 58 | 42 |
| Pollution index | 1,072,440 | 1,561,881 | 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. |
| Saltville, VA | 2,307 | 26 | 48.0% |
| Claypool Hill, VA | 1,424 | 45 | 10.0% |
| Honaker, VA | 1,423 | 45 | 10.0% |
| Lebanon, VA | 3,221 | 45 | 10.0% |
| Raven, VA | 2,305 | 45 | 10.0% |
| Richlands, VA | 5,311 | 45 | 10.0% |
| City | Population | Air Quality Index | National Avg. |
| Winterset, IA | 5,309 | 39 | 22.0% |
| Sunset, UT | 5,309 | 45 | 10.0% |
| Tillamook, OR | 5,308 | 32 | 36.0% |
| Tellico Village, TN | 5,314 | 53 | 6.0% |
| Colona, IL | 5,307 | 46 | 8.0% |
| Richlands, VA | 5,311 | 45 | 10.0% |
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