Last updated: July 2, 2025
Understanding the UV Index in New Haven, United States is crucial for protecting your skin and overall health. As the sun's rays can be particularly intense during midday hours, being aware of UV levels helps you prevent sunburn and reduces the risk of long-term skin damage. In a city like New Haven, with its humid subtropical climate, residents face varying UV exposure risks throughout the year. With peak UV Index readings often soaring to 11 during the summer months, it's vital to stay informed and take proactive measures against harmful sun exposure. Your skin will thank you!
The UV Index for the day reflects a dynamic shift in solar intensity as the hours progress. Starting off at a mild 1 at 07:00, the index gradually climbs, hitting 2 by 09:00. A noticeable surge occurs between 10:00 and 12:00, where it peaks at an impressive 9. The hottest moments arrive at 13:00 and 14:00, reaching a maximum of 11, indicating a high risk for sun exposure. As the afternoon wanes, the UV levels gently decline, dropping to 5 by 17:00 and further down to 1 by 19:00. Be sure to take precautions during the midday hours to protect your skin from potential harm!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 2 | low | 45 min |
| 10:00 | 4 | moderate | 30 min |
| 11:00 | 7 | high | 25 min |
| 12:00 | 9 | very high | 15 min |
| 13:00 | 10 | very high | 15 min |
| 14:00 | 11 | extreme | 10 min |
| 15:00 | 9 | very high | 15 min |
| 16:00 | 7 | high | 25 min |
| 17:00 | 5 | moderate | 30 min |
| 18:00 | 3 | moderate | 30 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, the UV Index experiences significant seasonal changes, with January and December presenting the lowest levels (UV Index 3) and the summer months of June and July reaching peak levels (UV Index 11), categorized as extreme. April and May also have very high readings (UV Index 9-10), indicating a gradual increase in risk as spring progresses into summer. March, August, and September maintain a high risk for UV exposure (UV Index 7-9). Visitors and residents are advised to take precautions from March through October, especially during the extreme months of June and July, by seeking shade, wearing protective clothing, and applying sunscreen regularly, as burn times decrease significantly to as little as 10 minutes during peak UV periods.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chicago UVI | 3 | 4 | 6 | 8 | 9 | 10 | 10 | 9 | 8 | 6 | 4 | 2 |
| Brooklyn UVI | 3 | 5 | 6 | 8 | 10 | 10 | 9 | 9 | 8 | 6 | 4 | 2 |
| New York City UVI | 3 | 5 | 6 | 8 | 10 | 10 | 9 | 9 | 8 | 6 | 4 | 2 |
| New Haven | 3 | 5 | 7 | 9 | 10 | 11 | 11 | 10 | 9 | 7 | 5 | 3 |
| Los Angeles UVI | 4 | 6 | 8 | 9 | 10 | 11 | 11 | 10 | 10 | 7 | 5 | 4 |
| Houston UVI | 5 | 8 | 9 | 11 | 11 | 12 | 12 | 11 | 10 | 9 | 7 | 5 |