Last updated: July 2, 2025
Understanding the UV Index is crucial for residents of Vernal, United States, where the unique BSk climate results in varying levels of sun exposure throughout the year. Being aware of UV levels not only helps in preventing sunburn but also plays a vital role in maintaining long-term skin health. With peak UV Index values reaching as high as 12 during midday, it's important for locals to take appropriate precautions to protect their skin. Familiarizing yourself with these levels and the associated risks can make a significant difference in your overall well-being, especially during the sunnier months!
The UV Index today showcases a dramatic rise as the sun reaches its peak. Starting at a gentle 1 at 07:00, the index escalates steadily, reaching its first significant benchmark of 3 by 09:00. However, the real intensity kicks in at 10:00, soaring to 6 and peaking at 12 during the hour of 13:00, and maintaining that blistering level until 14:00. After this peak, the UV Index starts to decline, dropping to 10 by 15:00, and gently fading to 5 by 17:00, before settling back to a safer 1 by 19:00. This highlights the importance of protecting your skin during the midday hours when the UV exposure is at its maximum.
| 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 | 9 | very high | 15 min |
| 12:00 | 11 | extreme | 10 min |
| 13:00 | 12 | extreme | 10 min |
| 14:00 | 12 | extreme | 10 min |
| 15:00 | 10 | 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, UV Index levels vary significantly, with high-risk months occurring from March to August. During this period, particularly in May, June, and July, the UV Index reaches its peak at 12, indicating an extreme exposure category with a burn time of just 10 minutes. To reduce the risk of harmful effects from UV radiation, visitors and residents should take extra precautions during these months, especially in late spring and summer. In contrast, the lower UV levels in January, November, and December, with a maximum index of 3, represent moderate exposure, allowing for longer burn times of 30 minutes. It is advisable for everyone to stay informed on UV levels year-round and adjust their sun protection strategies accordingly.
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 |
| Vernal | 3 | 6 | 8 | 10 | 11 | 12 | 12 | 11 | 10 | 7 | 5 | 3 |
| Houston UVI | 5 | 8 | 9 | 11 | 11 | 12 | 12 | 11 | 10 | 9 | 7 | 5 |