As of 2:08 PM PDT on May 20, 2026, out of 9 cities in Colusa County, CA in our database, 8 cities (89%) have a UV Index reading of Very High, while 1 city (11%) have a UV Index reading of High. The city with the highest UV Index reading right now is Lodoga, CA with a reading of 7.7.
Over the next 24 hours, the highest UV Index reading in Colusa County, CA is expected to be 9.1 in Lodoga 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 |