As of 2:38 PM EDT on May 22, 2026, all 1 cities in Knox County, ME in our database have a UV Index reading of High. The city with the highest UV Index reading right now is Rockland, ME with a reading of 6.8.
Over the next 24 hours, the highest UV Index reading in Knox County, ME is expected to be 6.8 in Rockland between 2:00 PM - 3:00 PM EDT today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |