| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 69°F | 82°F | 76°F | 9.4" |
| February | 68°F | 82°F | 75°F | 12.9" |
| March | 69°F | 83°F | 76°F | 3.9" |
| April | 71°F | 84°F | 77°F | 0.3" |
| May | 72°F | 84°F | 78°F | 2.0" |
| June | 73°F | 85°F | 79°F | 4.8" |
| July | 74°F | 87°F | 80°F | 2.4" |
| August | 75°F | 87°F | 81°F | 1.9" |
| September | 75°F | 87°F | 81°F | 1.3" |
| October | 73°F | 86°F | 80°F | 0.2" |
| November | 71°F | 84°F | 77°F | 3.1" |
| December | 70°F | 83°F | 77°F | 13.1" |
| Index | Hawi | 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. |
| Waimea, HI | 10,969 | 16 | 68.0% |
| Waimea CDP (Kauai County), HI | 1,804 | 16 | 68.0% |
| Halaula, HI | 644 | 16 | 68.0% |
| Kapaau, HI | 1,927 | 16 | 68.0% |
| Hawi, HI | 1,325 | 15 | 70.0% |
| City | Population | Air Quality Index | National Avg. |
| Donovan Estates, AZ | 1,325 | 45 | 10.0% |
| Newark, IL | 1,325 | 0 | 100.0% |
| Norris City, IL | 1,325 | 43 | 14.0% |
| Muhlenberg Park, PA | 1,325 | 42 | 16.0% |
| St. Vincent College, PA | 1,325 | 39 | 22.0% |
| Hawi, HI | 1,325 | 15 | 70.0% |
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