As of 4:25 PM EDT on July 30, 2025, out of 11 cities in Martin County, FL in our database, 10 cities (91%) have a UV Index reading of Moderate, while 1 city (9%) have a UV Index reading of High. The city with the highest UV Index reading right now is Jupiter Island, FL with a reading of 6.1.
Over the next 24 hours, the highest UV Index reading in Martin County, FL is expected to be 11.3 in Hobe Sound between 1:00 PM - 2:00 PM EDT tomorrow.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |