As of 3:41 AM PDT on April 21, 2026, all 24 cities in Ventura County, CA in our database have a UV Index reading of 0, indicating no radiation from the sun.
Over the next 24 hours, the highest UV Index reading in Ventura County, CA is expected to be 4.9 in Oxnard between 3:00 PM - 4:00 PM PDT today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |