As of 2:34 PM HST on July 25, 2025, out of 158 cities in Hawaii in our database, 114 cities (72%) have a UV Index reading of Extreme, 30 cities (19%) have a UV Index reading of Very High, 10 cities (6%) have a UV Index reading of High, while 4 cities (3%) have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Mountain View, HI with a reading of 11.7.
Over the next 24 hours, the highest UV Index reading in Hawaii is expected to be 14.3 in Mountain View between 12:00 PM - 1:00 PM HST tomorrow.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |