As of 12:18 PM CST on January 23, 2026, out of 4 cities in Brewster County, TX in our database, 3 cities (75%) have a UV Index reading of Low, while 1 city (25%) have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Marathon, TX with a reading of 2.8.
Over the next 24 hours, the highest UV Index reading in Brewster County, TX is expected to be 4.2 in Alpine between 1:00 PM - 2:00 PM CST today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |