| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 61°F | 77°F | 68°F | 4.4" |
| February | 62°F | 76°F | 68°F | 3.7" |
| March | 63°F | 77°F | 69°F | 8.8" |
| April | 64°F | 78°F | 71°F | 2.9" |
| May | 65°F | 80°F | 72°F | 3.2" |
| June | 67°F | 82°F | 74°F | 1.8" |
| July | 68°F | 83°F | 75°F | 2.3" |
| August | 69°F | 84°F | 76°F | 3.4" |
| September | 68°F | 83°F | 75°F | 2.2" |
| October | 67°F | 82°F | 74°F | 3.1" |
| November | 66°F | 80°F | 72°F | 3.5" |
| December | 64°F | 77°F | 70°F | 6.2" |
| Index | Wahiawa | 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 Villages, HI | 6,452 | 30 | 40.0% |
| Makakilo, HI | 19,565 | 30 | 40.0% |
| Royal Kunia, HI | 13,857 | 30 | 40.0% |
| Waipio, HI | 10,745 | 30 | 40.0% |
| Whitmore Village, HI | 3,764 | 30 | 40.0% |
| Wahiawa, HI | 16,442 | 30 | 40.0% |
| City | Population | Air Quality Index | National Avg. |
| Streetsboro, OH | 16,444 | 43 | 14.0% |
| Troutdale, OR | 16,433 | 38 | 24.0% |
| Hazel Park, MI | 16,452 | 56 | 12.0% |
| Artesia, CA | 16,456 | 72 | 44.0% |
| Palmetto Estates, FL | 16,419 | 41 | 18.0% |
| Wahiawa, HI | 16,442 | 30 | 40.0% |
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