As of 3:00 AM EDT on September 5, 2025, all 5 cities in Aroostook County, ME 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 Aroostook County, ME is expected to be 3.5 in Grand Isle between 3:00 PM - 4:00 PM ADT today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |