| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 30°F | 35°F | 33°F | n/a |
| February | 30°F | 35°F | 32°F | n/a |
| March | 30°F | 35°F | 32°F | n/a |
| April | 35°F | 39°F | 37°F | n/a |
| May | 41°F | 44°F | 42°F | n/a |
| June | 46°F | 49°F | 47°F | n/a |
| July | 51°F | 53°F | 52°F | n/a |
| August | 52°F | 55°F | 53°F | n/a |
| September | 49°F | 52°F | 50°F | n/a |
| October | 42°F | 46°F | 44°F | n/a |
| November | 36°F | 41°F | 38°F | n/a |
| December | 32°F | 37°F | 35°F | n/a |
| Index | Karluk | Alaska | National |
| Air quality index | 31 | 30 | 42 |
| Pollution index | 514,241 | 11,243,194 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 262 |
| Days with moderate air quality | 92 |
| Days w/ poor A.Q. for sensitive groups | 7 |
| Days with unhealthy air quality | 4 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.010% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Karluk, AK | 28 | 31 | 38.0% |
| City | Population | Air Quality Index | National Avg. |
| Floriston, CA | 28 | 44 | 12.0% |
| Benton, IA | 28 | 43 | 14.0% |
| Annapolis, IL | 28 | 45 | 10.0% |
| Cobden, MN | 28 | 32 | 36.0% |
| Biehle, MO | 28 | 43 | 14.0% |
| Karluk, AK | 28 | 31 | 38.0% |
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