As of 3:01 PM PDT on August 16, 2026, out of 73 cities in Riverside County, CA in our database, 68 cities (93%) have a UV Index reading of High, while 5 cities (7%) have a UV Index reading of Very High. The city with the highest UV Index reading right now is Idyllwild-Pine Cove, CA with a reading of 7.6.
Over the next 24 hours, the highest UV Index reading in Riverside County, CA is expected to be 11.5 in Idyllwild-Pine Cove between 1:00 PM - 2:00 PM PDT tomorrow.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |