As of 1:53 PM CDT on July 18, 2025, out of 6 cities in Calhoun County, TX in our database, 5 cities (83%) have a UV Index reading of Extreme, while 1 city (17%) have a UV Index reading of Very High. The city with the highest UV Index reading right now is Port Lavaca, TX with a reading of 11.2.
Over the next 24 hours, the highest UV Index reading in Calhoun County, TX is expected to be 11.3 in Port Lavaca between 2:00 PM - 3:00 PM CDT today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |