As of 4:22 PM CDT on September 23, 2025, all 106 cities in Starr County, TX in our database have a UV Index reading of High. The city with the highest UV Index reading right now is Roma, TX with a reading of 6.1.
Over the next 24 hours, the highest UV Index reading in Starr County, TX is expected to be 10.1 in Las Lomas between 2:00 PM - 3:00 PM CDT tomorrow.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |