As of 5:52 PM EST on November 30, 2025, all 2 cities in Nantucket County, MA 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 Nantucket County, MA is expected to be 1.4 in Madaket between 12:00 PM - 1:00 PM EST tomorrow.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |