As of 9:08 AM MST on January 22, 2026, all 19 cities in Washington County, UT in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Springdale, UT with a reading of 0.4.
Over the next 24 hours, the highest UV Index reading in Washington County, UT is expected to be 2.5 in St. George between 1:00 PM - 2:00 PM MST today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |