As of 12:32 AM HST on September 12, 2025, all 53 cities in Honolulu 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 Honolulu County, HI is expected to be 10.7 in Pearl City between 1:00 PM - 2:00 PM HST today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |