| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 64°F | 77°F | 71°F | 8.3" |
| February | 63°F | 76°F | 70°F | 6.0" |
| March | 62°F | 76°F | 70°F | 5.9" |
| April | 64°F | 78°F | 71°F | 2.3" |
| May | 65°F | 81°F | 73°F | 2.0" |
| June | 67°F | 82°F | 75°F | 1.4" |
| July | 69°F | 82°F | 75°F | 1.6" |
| August | 68°F | 83°F | 76°F | 1.8" |
| September | 69°F | 82°F | 75°F | 2.4" |
| October | 67°F | 80°F | 74°F | 4.2" |
| November | 66°F | 79°F | 72°F | 2.7" |
| December | 64°F | 77°F | 70°F | 5.8" |
| Index | Makaha Valley | Hawaii | National |
| Air quality index | 30 | 59 | 42 |
| Pollution index | 2,893,180 | 3,576,767 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 347 |
| Days with moderate air quality | 18 |
| Days w/ poor A.Q. for sensitive groups | |
| Days with unhealthy air quality |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.040% |
| Carbon Tetrachloride | 0.010% |
| Lead | 0.090% |
| Mercury | 0.001% |
| City | Population | Air Quality Index | National Avg. |
| Ewa Beach, HI | 13,803 | 30 | 40.0% |
| Kalaeloa, HI | 2,421 | 30 | 40.0% |
| Ocean Pointe, HI | 15,688 | 30 | 40.0% |
| Wahiawa, HI | 16,442 | 30 | 40.0% |
| Waipio Acres, HI | 5,556 | 30 | 40.0% |
| Makaha Valley, HI | 120 | 30 | 40.0% |
| City | Population | Air Quality Index | National Avg. |
| Haleburg, AL | 120 | 35 | 30.0% |
| Haynes, AR | 120 | 45 | 10.0% |
| Pike, CA | 120 | 44 | 12.0% |
| Nunez, GA | 120 | 47 | 6.0% |
| Cylinder, IA | 120 | 15 | 70.0% |
| Makaha Valley, HI | 120 | 30 | 40.0% |
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