As of 2:48 PM PDT on July 22, 2025, out of 141 cities in Los Angeles County, CA in our database, 127 cities (90%) have a UV Index reading of Very High, while 14 cities (10%) have a UV Index reading of Extreme. The city with the highest UV Index reading right now is Glendora, CA with a reading of 10.8.
Over the next 24 hours, the highest UV Index reading in Los Angeles County, CA is expected to be 11.4 in Palmdale 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 |