As of 12:01 PM PDT on March 22, 2026, out of 18 cities in Imperial County, CA in our database, 12 cities (67%) have a UV Index reading of Very High, while 6 cities (33%) have a UV Index reading of High. The city with the highest UV Index reading right now is Winterhaven, CA with a reading of 8.1.
Over the next 24 hours, the highest UV Index reading in Imperial County, CA is expected to be 8.2 in Winterhaven 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 |