As of 11:07 AM HST on November 4, 2025, out of 158 cities in Hawaii in our database, 84 cities (53%) have a UV Index reading of High, 67 cities (42%) have a UV Index reading of Moderate, while 7 cities (4%) have a UV Index reading of Very High. The city with the highest UV Index reading right now is Honaunau-Napoopoo, HI with a reading of 7.9.
Over the next 24 hours, the highest UV Index reading in Hawaii is expected to be 8.7 in Mountain View between 12:00 PM - 1:00 PM HST today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |