As of 2:29 PM EDT on June 18, 2026, out of 41 cities in New Hampshire in our database, 35 cities (85%) have a UV Index reading of Low, 4 cities (10%) have a UV Index reading of High, while 2 cities (5%) have a UV Index reading of Moderate. The city with the highest UV Index reading right now is Contoocook, NH with a reading of 7.2.
Over the next 24 hours, the highest UV Index reading in New Hampshire is expected to be 9.2 in West Swanzey between 1:00 PM - 2:00 PM EDT tomorrow.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |