| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | -9°F | 3°F | -4°F | 0.6" |
| February | -3°F | 11°F | 3°F | 0.1" |
| March | 0°F | 19°F | 9°F | 0.1" |
| April | 21°F | 40°F | 30°F | 0.9" |
| May | 38°F | 58°F | 48°F | 1.5" |
| June | 49°F | 68°F | 58°F | 2.1" |
| July | 52°F | 69°F | 60°F | 2.7" |
| August | 47°F | 63°F | 54°F | 2.9" |
| September | 37°F | 51°F | 43°F | 3.0" |
| October | 21°F | 32°F | 26°F | 1.6" |
| November | 2°F | 13°F | 7°F | 0.5" |
| December | -4°F | 6°F | 1°F | 0.1" |
| Index | Ruby | Alaska | National |
| Air quality index | 38 | 30 | 42 |
| Pollution index | 269,884,000 | 11,243,194 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 230 |
| Days with moderate air quality | 96 |
| Days w/ poor A.Q. for sensitive groups | 18 |
| Days with unhealthy air quality | 16 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 6.330% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Ruby, AK | 190 | 38 | 24.0% |
| City | Population | Air Quality Index | National Avg. |
| Lutak, AK | 190 | 20 | 60.0% |
| Banks, AR | 190 | 35 | 30.0% |
| Ardencroft, DE | 190 | 51 | 2.0% |
| Harris, IA | 190 | 36 | 28.0% |
| Murphy, ID | 190 | 36 | 28.0% |
| Ruby, AK | 190 | 38 | 24.0% |
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