Last updated: July 2, 2025
Understanding the UV Index is crucial for residents of Norwich, United States, where seasonal climate patterns can lead to varying levels of sun exposure. With a climate zone classified as Dfb, Norwich experiences a distinct range of UV levels throughout the year, peaking around midday with values that can reach as high as 10 during the summer months. By being aware of the UV Index, you can take proactive steps to prevent sunburn and protect your skin health, ensuring that outdoor activities are both enjoyable and safe. With the highest risk occurring between 11:00 AM and 1:00 PM, staying informed can make all the difference in safeguarding your well-being under the sun.
The UV Index experiences a dramatic rise as the day progresses, starting from a mere 1 at 07:00. By 09:00, it climbs to 3, but the real intensity kicks in by 10:00, reaching 6. The peak UV exposure occurs at 13:00, with an impressive index of 10, emphasizing the importance of sun protection during these hours. As the afternoon unfolds, the index gradually falls, sliding to 9 by 14:00, then tapering off to 3 by 17:00. As the sun sets, the UV Index returns to a safer 1 by 19:00, marking the end of an intense soaring level of UV radiation. Be sure to stay protected during peak hours! 🌞
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 3 | moderate | 30 min |
| 10:00 | 6 | high | 25 min |
| 11:00 | 7 | high | 25 min |
| 12:00 | 9 | very high | 15 min |
| 13:00 | 10 | very high | 15 min |
| 14:00 | 9 | very high | 15 min |
| 15:00 | 7 | high | 25 min |
| 16:00 | 5 | moderate | 30 min |
| 17:00 | 3 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
The UV Index exhibits significant seasonal variation, peaking during the summer months. From March to September, the UV Index escalates from 6 (high) in March to a maximum of 10 (very high) in May through July, indicating a heightened risk of skin damage with a burn time as brief as 15 minutes. April and August also maintain very high levels, while October sees a decline to 6 (high) again. The high-risk months for UV exposure are therefore April through September, where vigilance is crucial. It is advisable for both visitors and residents to protect their skin by wearing sunscreen, protective clothing, and seeking shade during peak sun hours, particularly in these months. In contrast, December and January present lower UV risks, with the index at 2 and 3 respectively, allowing for more extended outdoor activities with less concern for UV-related harm.
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 |
| Norwich | 3 | 4 | 6 | 9 | 10 | 10 | 10 | 9 | 8 | 6 | 4 | 2 |
| 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 |