As of 12:48 PM PST on January 6, 2026, out of 56 cities in San Diego County, CA in our database, 50 cities (89%) have a UV Index reading of Low, while 6 cities (11%) have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Jacumba, CA with a reading of 3.
Over the next 24 hours, the highest UV Index reading in San Diego County, CA is expected to be 3 in Jacumba between 12:00 PM - 1:00 PM PST today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |