As of 5:36 PM EDT on September 17, 2025, all 17 cities in New Haven County, CT in our database have a UV Index reading of Low. The city with the highest UV Index reading right now is Branford Center, CT with a reading of 0.3.
Over the next 24 hours, the highest UV Index reading in New Haven County, CT is expected to be 5 in New Haven between 2:00 PM - 3:00 PM EDT tomorrow.
| Range | 0 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11+ |
|---|---|---|---|---|---|
| Color | |||||
| Risk | Low | Moderate | High | Very High | Extreme |