| 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 | Kahului | 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. |
| Lahaina, HI | 13,216 | 15 | 70.0% |
| Makawao, HI | 7,989 | 15 | 70.0% |
| Pukalani, HI | 7,689 | 15 | 70.0% |
| Kula, HI | 6,687 | 15 | 70.0% |
| Haiku-Pauwela, HI | 9,107 | 15 | 70.0% |
| Kahului, HI | 29,993 | 15 | 70.0% |
| City | Population | Air Quality Index | National Avg. |
| Madison Heights, MI | 30,000 | 56 | 12.0% |
| New Bern, NC | 29,985 | 37 | 26.0% |
| North Chicago, IL | 29,967 | 39 | 22.0% |
| Fitchburg, WI | 30,032 | 39 | 22.0% |
| Burlingame, CA | 30,071 | 43 | 14.0% |
| Kahului, HI | 29,993 | 15 | 70.0% |
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