Last updated: August 1, 2025
Understanding the UV Index in Ulaan-Uul, Mongolia, is crucial for maintaining skin health and preventing sunburn, especially in a region characterized by a semi-arid climate (BSk). With UV levels peaking at a high of 10 during the midday hours, the sun's intensity can pose a significant risk to residents and visitors alike. Being aware of these levels not only helps safeguard against immediate skin damage but also promotes long-term health by reducing the risk of skin cancer. Stay informed about the UV Index in Ulaan-Uul to enjoy the outdoors safely and protect your skin from harmful UV radiation.
The UV Index reveals a dynamic ascent and descent throughout the day, peaking with intensity during midday. Starting at a gentle 1 at 7:00 AM, it climbs steadily, reaching 10 by 1:00 PM and maintaining this highest level until 2:00 PM. This critical window indicates significant sun exposure, and it’s essential to take precautions. As the afternoon progresses, the index begins to taper off, dropping to 8 at 3:00 PM, then gradually falling to 1 by 7:00 PM. This data highlights the importance of being sun-smart during the peak hours to minimize UV exposure risks.
| 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 | 5 | moderate | 30 min |
| 11:00 | 7 | high | 25 min |
| 12:00 | 9 | very high | 15 min |
| 13:00 | 10 | very high | 15 min |
| 14:00 | 10 | very high | 15 min |
| 15:00 | 8 | very high | 15 min |
| 16:00 | 6 | high | 25 min |
| 17:00 | 4 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, UV exposure varies significantly, with a noticeable increase from March to August. The high-risk months are April to August, where the UV Index reaches 8-10, categorized as very high; during this period, the recommended burn time decreases to just 15 minutes. In contrast, January and December exhibit low exposure levels, with a UV Index of 2 and a burn time of 45 minutes. Visitors and residents should take extra precautions during the high UV months by wearing sunscreen, protective clothing, and seeking shade, especially between 10 AM and 4 PM when the sun's rays are the strongest. During the rest of the year, while the risk is lower, it is still advisable to be mindful of UV exposure, especially in March, September, and October with moderate UV levels.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Darhan UVI | 1 | 3 | 5 | 6 | 8 | 9 | 9 | 8 | 6 | 4 | 2 | 1 |
| Erdenet UVI | 2 | 3 | 5 | 7 | 8 | 9 | 9 | 8 | 6 | 4 | 2 | 1 |
| Ulan Bator UVI | 2 | 3 | 5 | 7 | 9 | 9 | 9 | 9 | 6 | 4 | 3 | 1 |
| OElgii UVI | 2 | 3 | 5 | 7 | 10 | 9 | 9 | 9 | 7 | 5 | 2 | 1 |
| Khovd UVI | 2 | 3 | 6 | 7 | 10 | 10 | 9 | 9 | 7 | 5 | 2 | 1 |
| Ulaan-Uul | 2 | 3 | 6 | 8 | 10 | 10 | 10 | 10 | 7 | 5 | 3 | 2 |