As of 9:37 PM PDT on October 29, 2025, all 8 cities in Multnomah 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 Multnomah County, OR is expected to be 1.3 in Portland between 12:00 PM - 1:00 PM PDT tomorrow.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |