As of 11:08 AM CDT on April 29, 2026, out of 9 cities in Grimes County, TX in our database, 7 cities (78%) have a UV Index reading of Moderate, while 2 cities (22%) have a UV Index reading of Low. The city with the highest UV Index reading right now is Plantersville, TX with a reading of 4.6.
Over the next 24 hours, the highest UV Index reading in Grimes County, TX is expected to be 10.1 in Plantersville 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 |