As of 12:47 PM PDT on March 22, 2026, out of 16 cities in Lassen County, CA in our database, 8 cities (50%) have a UV Index reading of Moderate, while 8 cities (50%) have a UV Index reading of High. The city with the highest UV Index reading right now is Westwood, CA with a reading of 5.9.
Over the next 24 hours, the highest UV Index reading in Lassen County, CA is expected to be 6.8 in Westwood between 1:00 PM - 2:00 PM PDT today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |