As of 1:20 PM EDT on July 2, 2026, all 17 cities in New Haven County, CT in our database have a UV Index reading of Very High. The city with the highest UV Index reading right now is Waterbury, CT with a reading of 9.6.
Over the next 24 hours, the highest UV Index reading in New Haven County, CT is expected to be 9.6 in Waterbury between 1:00 PM - 2:00 PM EDT today.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |