As of 8:58 PM HST on September 4, 2025, all 23 cities in Kauai County, HI in our database have a UV Index reading of 0, indicating no radiation from the sun.
Over the next 24 hours, the highest UV Index reading in Kauai County, HI is expected to be 12.2 in Wailua Homesteads between 1:00 PM - 2:00 PM HST tomorrow.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |