As of 5:36 AM PDT on April 14, 2026, all 9 cities in Columbia County, OR 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 Columbia County, OR is expected to be 2.1 in St. Helens between 12:00 PM - 1:00 PM PDT today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |