Last updated: July 2, 2025
In Tsant, Mongolia, awareness of the UV Index is crucial for safeguarding your skin and overall health. Understanding UV levels helps in preventing sunburn and managing long-term skin health, especially in a region with a BSk climate that features dry conditions and varying exposure to intense sunlight. With peak UV Index values reaching as high as 9 during midday hours, residents and visitors alike should take precautions to protect themselves from harmful UV radiation. Being informed about these levels is essential for enjoying the outdoors safely and effectively, particularly as the sun can pose significant risks between 10:00 AM and 2:00 PM when UV exposure is at its peak.
The UV Index throughout the day presents a clear pattern of intensity, peaking at midday. Starting from a mild level of 1 at 07:00, the index rises steadily, reaching 2 by 08:00. The real surge occurs between 09:00 and 13:00, where it escalates from 4 to a striking 9—the highest point of the day. As the afternoon unfolds, the intensity slightly declines to 7 at 15:00, before tapering off to 5 at 16:00. The evening sees a further decrease, settling back to 2 by 18:00 and returning to 1 at 19:00. For those enjoying outdoor activities, it’s essential to take precautions, especially during the peak hours from 11:00 to 14:00 when the UV rays are most potent.
| 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 | 9 | very high | 15 min |
| 13:00 | 9 | very high | 15 min |
| 14:00 | 9 | very high | 15 min |
| 15:00 | 7 | high | 25 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 |
Throughout the year, the UV Index shows significant seasonal changes, with exposure risk peaking during the warmer months. January and December feature low UV levels (Index 2), allowing for safe, extended sun exposure of about 45 minutes. As we move into February and March, the risk increases to moderate levels (Index 3-5), reducing burn time to 30 minutes. However, April through August sees a notable rise, with very high UV exposure levels (Index 8-10), necessitating caution as burn times decrease to 15 minutes. September shows a decline to a high category (Index 7) with a burn time of 25 minutes, while October and November revert to moderate levels. Visitors and residents should take extra precautions from April to August by wearing sunscreen, protective clothing, and limiting sun exposure, especially during midday hours.
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 |
| Tsant | 2 | 3 | 5 | 8 | 9 | 10 | 9 | 9 | 7 | 5 | 3 | 2 |