| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 20°F | 32°F | 26°F | 2.1" |
| February | 21°F | 35°F | 28°F | 2.3" |
| March | 22°F | 36°F | 29°F | 1.0" |
| April | 31°F | 45°F | 38°F | 1.4" |
| May | 38°F | 54°F | 46°F | 0.7" |
| June | 44°F | 59°F | 52°F | 0.9" |
| July | 48°F | 62°F | 55°F | 1.4" |
| August | 48°F | 61°F | 55°F | 2.2" |
| September | 43°F | 56°F | 50°F | 3.6" |
| October | 34°F | 47°F | 41°F | 2.6" |
| November | 22°F | 36°F | 29°F | 2.5" |
| December | 21°F | 34°F | 28°F | 3.2" |
| Index | Kachemak | Alaska | National |
| Air quality index | 31 | 30 | 42 |
| Pollution index | 2,169,570 | 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 | 0.002% |
| Benzene | 0.040% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.020% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Halibut Cove, AK | 188 | 31 | 38.0% |
| Anchor Point, AK | 2,247 | 31 | 38.0% |
| Homer, AK | 5,830 | 31 | 38.0% |
| Diamond Ridge, AK | 1,336 | 31 | 38.0% |
| Seldovia Village, AK | 175 | 31 | 38.0% |
| Kachemak, AK | 545 | 31 | 38.0% |
| City | Population | Air Quality Index | National Avg. |
| Lafayette, MN | 545 | 46 | 8.0% |
| Sabin, MN | 545 | 33 | 34.0% |
| Trimble, MO | 545 | 43 | 14.0% |
| Old Hundred, NC | 545 | 30 | 40.0% |
| Berthold, ND | 545 | 34 | 32.0% |
| Kachemak, AK | 545 | 31 | 38.0% |
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