| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 27°F | 44°F | 34°F | 3.0" |
| February | 28°F | 46°F | 36°F | 5.4" |
| March | 37°F | 56°F | 45°F | 4.1" |
| April | 46°F | 66°F | 55°F | 8.1" |
| May | 54°F | 72°F | 62°F | 6.4" |
| June | 61°F | 80°F | 70°F | 4.2" |
| July | 64°F | 82°F | 72°F | 5.2" |
| August | 64°F | 81°F | 71°F | 8.4" |
| September | 57°F | 75°F | 65°F | 12.4" |
| October | 47°F | 66°F | 56°F | 13.8" |
| November | 37°F | 56°F | 45°F | 6.0" |
| December | 32°F | 48°F | 39°F | 5.2" |
| Index | Allisonia | Virginia | National |
| Air quality index | 41 | 58 | 42 |
| Pollution index | 243,902 | 1,561,881 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 306 |
| Days with moderate air quality | 55 |
| Days w/ poor A.Q. for sensitive groups | 4 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.020% |
| Benzene | 0.003% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.020% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Max Meadows, VA | 406 | 41 | 18.0% |
| Fairlawn, VA | 2,656 | 41 | 18.0% |
| Plum Creek, VA | 1,066 | 41 | 18.0% |
| Pulaski, VA | 8,744 | 41 | 18.0% |
| Hillsville, VA | 2,679 | 41 | 18.0% |
| Allisonia, VA | 115 | 41 | 18.0% |
| City | Population | Air Quality Index | National Avg. |
| Nikolai, AK | 115 | 31 | 38.0% |
| Onycha, AL | 115 | 35 | 30.0% |
| Staves, AR | 115 | 32 | 36.0% |
| Wet Camp Village, AZ | 115 | 74 | 48.0% |
| Mettler, CA | 115 | 67 | 34.0% |
| Allisonia, VA | 115 | 41 | 18.0% |
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