| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | -10°F | 9°F | -1°F | 1.0" |
| February | -6°F | 18°F | 5°F | 0.7" |
| March | -2°F | 29°F | 14°F | 0.4" |
| April | 20°F | 46°F | 34°F | 0.3" |
| May | 32°F | 61°F | 47°F | 0.6" |
| June | 41°F | 69°F | 55°F | 1.1" |
| July | 46°F | 71°F | 58°F | 1.9" |
| August | 42°F | 66°F | 54°F | 2.0" |
| September | 33°F | 57°F | 45°F | 1.4" |
| October | 18°F | 39°F | 28°F | 1.0" |
| November | -6°F | 16°F | 5°F | 1.0" |
| December | -10°F | 9°F | -0°F | 1.0" |
| Index | Tolsona | Alaska | National |
| Air quality index | 29 | 30 | 50 |
| Pollution index | 749,334 | 11,990,286 | 5,066,862 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 284 |
| Days with moderate air quality | 76 |
| Days w/ poor A.Q. for sensitive groups | 4 |
| Days with unhealthy air quality | 1 |
| Pollutant | Total |
| Arsenic | 0.002% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.010% |
| Mercury | 0.000% |
| City, State | Population | Air Quality Index | National Avg. |
| Mendeltna, AK | 20 | 29 | 42% |
| Lake Louise, AK | 7 | 29 | 42% |
| Tolsona, AK | 0 | 29 | 42% |
| City, State | Population | Air Quality Index | National Avg. |
| Alfred, TX | 0 | 31 | 38% |
| Valle Hermoso, TX | 0 | 36 | 28% |
| Powder River, WY | 0 | 39 | 22% |
| Hobart Bay, AK | 0 | 19 | 62% |
| Hartland, CA | 0 | 74 | 48% |
| Tolsona, AK | 0 | 29 | 42% |