As of 2:10 PM EDT on May 29, 2026, out of 11 cities in Martin County, FL in our database, 8 cities (73%) have a UV Index reading of Very High, while 3 cities (27%) have a UV Index reading of Extreme. The city with the highest UV Index reading right now is Jupiter Island, FL with a reading of 11.
Over the next 24 hours, the highest UV Index reading in Martin County, FL is expected to be 11 in Jupiter Island between 2:00 PM - 3:00 PM EDT today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |