Last updated: May 3, 2025
Understanding the UV Index is crucial for residents of Vista West, United States, where the climate's semi-arid conditions can lead to increased sun exposure. Being aware of UV levels helps safeguard against sunburn and long-term skin health issues, empowering you to take timely precautions. With peak UV Index values soaring to 10 between noon and 1 PM, it’s essential to monitor these levels and plan outdoor activities accordingly. Enjoying the sun safely can make all the difference in protecting your skin while enjoying the beautiful vistas Vista West has to offer!
The UV Index throughout the day showcases a dynamic pattern of sun exposure, peaking during the afternoon. At 07:00, the index starts low at 1, gradually increasing as the sun rises. By 10:00, it reaches 6, signaling a rise in sun intensity, culminating in a striking 10 from 12:00 to 13:00, indicating a high risk of harm from unprotected sun exposure. As the day progresses, the UV Index declines, dropping to 3 by 17:00, and steadily returning to 1 by 19:00. This data highlights the importance of sun protection, especially during midday when the UV Index is at its highest.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 4 | moderate | 30 min |
| 10:00 | 6 | high | 25 min |
| 11:00 | 8 | very high | 15 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 10 | very high | 15 min |
| 14:00 | 9 | very high | 15 min |
| 15:00 | 8 | very high | 15 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 |
As the seasons change, so do the UV Index levels, impacting sun exposure and burn times significantly. January begins with a moderate UV Index of 4 and a burn time of 30 minutes, but by April, the index escalates to an extreme level of 11, drastically reducing burn time to just 10 minutes. The highest risk months are June and July, featuring an extreme UV Index of 12 and a minimal burn time of 10 minutes, highlighting the need for caution. As summer transitions to fall, the UV Index begins to decline, with September at 9 (very high) and October back to 6 (high). November and December see moderate levels again with indices of 4 and 3 respectively, allowing for longer burn times of 30 minutes. It is essential for visitors and residents to remain vigilant during high-risk months (April through September), utilizing sunscreen, protective clothing, and limiting sun exposure during peak hours to ensure safety while enjoying the outdoors.
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 |
| Vista West | 4 | 6 | 7 | 11 | 10 | 12 | 12 | 11 | 9 | 6 | 4 | 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 |