Last updated: June 2, 2025
Understanding the UV Index is essential for residents and visitors in Newport, United States, where sunny days are abundant and UV radiation can be intense. Being aware of the daily UV levels helps in preventing sunburn and maintaining skin health, particularly when indices peak around midday with levels soaring to 11. Newport, characterized by its humid subtropical climate, can pose significant UV exposure risks during the summer months. By staying informed about the UV Index, you can take proactive measures to protect your skin and enjoy the vibrant outdoor lifestyle that Newport has to offer!
As the sun rises, the UV Index begins at a gentle 1 at 07:00 and 08:00, indicating minimal sun exposure risk. However, by 09:00, it jumps to 3 and continues to climb rapidly, reaching a significant 8 by 11:00. High noon brings the peak UV index of 10 at 12:00, followed by an intense 11 from 13:00 to 14:00, signaling a critical time for sun protection. As the afternoon wanes, the index starts to decline, dropping to 9 at 15:00, then decreasing to 7 at 16:00 and 5 by 17:00. Post-sunset, the index falls sharply to 3 at 18:00 and settles back at 1 as the day concludes at 19:00. This data underscores the importance of staying shielded from midday sun when the UV radiation is at its strongest.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 3 | moderate | 30 min |
| 10:00 | 5 | moderate | 30 min |
| 11:00 | 8 | very high | 15 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 11 | extreme | 10 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 exhibits significant seasonal changes, with the highest levels occurring in May, June, and July, where it reaches an extreme index of 11. These months pose the greatest risk for sunburn, with a quick burn time of just 10 minutes. The high-risk months to be particularly cautious are March through August, as the UV Index remains very high to extreme during this period. Visitors and residents should take proactive measures, including wearing protective clothing, applying broad-spectrum sunscreen, and seeking shade during peak sunlight hours, especially from 10 a.m. to 4 p.m. Conversely, in the winter months of December and January, the UV Index is lower at 3-4, indicating a moderate risk with a burn time of 30 minutes, allowing for slightly more leeway in sun exposure. Regardless of the season, it is essential to stay informed and protect yourself from harmful UV rays.
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 |
| Los Angeles UVI | 4 | 6 | 8 | 9 | 10 | 11 | 11 | 10 | 10 | 7 | 5 | 4 |
| Newport | 4 | 6 | 8 | 10 | 11 | 11 | 11 | 10 | 9 | 7 | 5 | 3 |
| Houston UVI | 5 | 8 | 9 | 11 | 11 | 12 | 12 | 11 | 10 | 9 | 7 | 5 |