As of 11:09 AM CDT on March 28, 2026, out of 53 cities in Cameron County, TX in our database, 48 cities (91%) have a UV Index reading of Moderate, while 5 cities (9%) have a UV Index reading of High. The city with the highest UV Index reading right now is Port Isabel, TX with a reading of 5.6.
Over the next 24 hours, the highest UV Index reading in Cameron County, TX is expected to be 9.7 in Harlingen between 1:00 PM - 2:00 PM CDT today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |