As of 6:00 PM CDT on June 16, 2026, all 12 cities in Zapata County, TX in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is San Ygnacio, TX with a reading of 1.8.
Over the next 24 hours, the highest UV Index reading in Zapata County, TX is expected to be 12 in Siesta Shores 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 |