Last updated: June 2, 2025
Understanding the UV Index in Sibley, United States is crucial for maintaining skin health and preventing sunburn, particularly as the area experiences the Dfa climate, which can bring intense sunlight during the warmer months. With UV levels peaking at 11 around midday, awareness of these fluctuating UV indexes is essential for residents and visitors alike. By keeping an eye on UV levels, you can effectively protect yourself from the harmful effects of UV radiation, ensuring you enjoy the outdoors safely while minimizing your risk of skin damage. Knowledge is your best defense against the sun!
The UV Index climbs steadily throughout the morning, starting at a modest 1 at 7:00 AM and reaching a more intense 3 by 9:00 AM. As the sun rises higher, the index peaks at an alarming 11 at 1:00 PM, indicating severe UV exposure. This high risk is only slightly alleviated in the following hours, where it drops to 10 at 2:00 PM and gradually decreases to 4 by 5:00 PM. As the evening approaches, the UV Index dips to low levels of 2 at 6:00 PM and returns to 1 by 7:00 PM. Remember, during the midday hours, adequate sun protection is crucial to safeguard your skin from harmful UV rays!
| 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 | 8 | very high | 15 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 11 | extreme | 10 min |
| 14:00 | 10 | very high | 15 min |
| 15:00 | 9 | very high | 15 min |
| 16:00 | 7 | high | 25 min |
| 17:00 | 4 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
The UV Index demonstrates significant seasonal variation throughout the year, peaking during the summer months. Notably, June reaches an extreme UV Index of 11, with a burn time of just 10 minutes, making it the highest risk period. May and July also have very high levels, at 9 and 10 respectively, with a burn time of 15 minutes. The spring months see a steady increase, with April at 8 and a burn time of 15 minutes, while March escalates to a high level with a burn time of 25 minutes. By contrast, January, February, October, November, and December display a moderate UV Index, typically allowing for a burn time of 30 minutes. Accordingly, visitors and residents should exercise caution, especially from March through September, when UV levels are notably higher. Regular use of sunscreen, protective clothing, and limiting sun exposure during peak hours is recommended to safeguard against skin damage.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sibley | 3 | 5 | 6 | 8 | 9 | 11 | 10 | 9 | 8 | 5 | 3 | 3 |
| 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 |
| Houston UVI | 5 | 8 | 9 | 11 | 11 | 12 | 12 | 11 | 10 | 9 | 7 | 5 |