As of 2:34 PM EDT on June 4, 2026, all 10 cities in St. Lucie County, FL in our database have a UV Index reading of Very High. The city with the highest UV Index reading right now is Fort Pierce, FL with a reading of 9.9.
Over the next 24 hours, the highest UV Index reading in St. Lucie County, FL is expected to be 9.9 in Fort Pierce 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 |