| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 62°F | 82°F | 72°F | 2.1" |
| February | 63°F | 82°F | 72°F | 1.5" |
| March | 64°F | 82°F | 73°F | 3.3" |
| April | 66°F | 84°F | 74°F | 1.2" |
| May | 67°F | 86°F | 76°F | 1.0" |
| June | 69°F | 87°F | 78°F | 0.3" |
| July | 71°F | 88°F | 79°F | 0.6" |
| August | 71°F | 89°F | 79°F | 0.6" |
| September | 70°F | 89°F | 79°F | 0.3" |
| October | 69°F | 88°F | 78°F | 0.9" |
| November | 67°F | 85°F | 75°F | 1.7" |
| December | 64°F | 83°F | 73°F | 3.6" |
| Index | Wailuku | Hawaii | National |
| Air quality index | 15 | 59 | 42 |
| Pollution index | 1,421,020 | 3,576,767 | 2,726,193 |
| Measurement | Total |
| Days measured | 362 |
| Days with good air quality | 347 |
| Days with moderate air quality | 11 |
| Days w/ poor A.Q. for sensitive groups | 3 |
| Days with unhealthy air quality | 1 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.010% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Olinda, HI | 948 | 15 | 70.0% |
| Kaanapali, HI | 1,115 | 15 | 70.0% |
| Launiupoko, HI | 587 | 15 | 70.0% |
| Napili-Honokowai, HI | 6,870 | 15 | 70.0% |
| Waihee-Waiehu, HI | 10,771 | 15 | 70.0% |
| Wailuku, HI | 17,523 | 15 | 70.0% |
| City | Population | Air Quality Index | National Avg. |
| Kingsland, GA | 17,523 | 36 | 28.0% |
| South Houston, TX | 17,522 | 52 | 4.0% |
| Centerville, UT | 17,527 | 51 | 2.0% |
| Martinsburg, WV | 17,517 | 40 | 20.0% |
| Bostonia, CA | 17,532 | 64 | 28.0% |
| Wailuku, HI | 17,523 | 15 | 70.0% |
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