As of 2:55 PM PDT on May 12, 2025, all 8 cities in Union County, OR in our database have a UV Index reading of Moderate. The city with the highest UV Index reading right now is North Powder, OR with a reading of 4.2.
Over the next 24 hours, the highest UV Index reading in Union County, OR is expected to be 6.4 in North Powder 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 |