Last updated: June 2, 2025
Understanding the UV Index is crucial for residents and visitors of Senj, Mongolia, where sun exposure can pose serious risks to skin health. As ultraviolet radiation levels fluctuate throughout the day, awareness of these levels helps in preventing sunburn and reducing the risk of long-term skin damage. In this region, categorized under the BWk climate zone, typical UV exposure peaks dramatically between late morning and early afternoon, with indices soaring as high as 10. With such significant UV risks, staying informed and taking protective measures is essential for enjoying the sunny days that Senj has to offer.
The UV Index throughout the day reveals a clear pattern of increasing intensity under the sun. Starting the morning at a moderate level of 2 at 07:00, the index gradually rises to a notable 3 by 08:00. By 09:00, it reaches a peak of 5, but the real intensity hits as it climbs to a significant 7 at 10:00. The sun’s potency peaks around 12:00, soaring to a maximum of 10, with this level sustained until 13:00. As the afternoon unfolds, the intensity begins to wane, dropping to 9 by 14:00 and then tapering down to 7 at 15:00. The evening ushers in a gentle decline, with the UV Index falling to 3 at 17:00, and finally settling at a low 1 by 19:00. Always remember to protect your skin, especially during peak hours when UV exposure is at its highest!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 2 | low | 45 min |
| 08:00 | 3 | moderate | 30 min |
| 09:00 | 5 | moderate | 30 min |
| 10:00 | 7 | high | 25 min |
| 11:00 | 9 | 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 | 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, UV Index levels show significant seasonal variation, highlighting key periods of risk for sun exposure. January and December feature low UV levels (Index 2), allowing for safer outdoor activities with a burn time of 45 minutes. As temperatures rise, February and March transition to moderate levels (Index 3 and 5 respectively), where burn times decrease to 30 minutes. The high-risk months of April through August are marked by very high UV Index levels (9-10), where the risk of harm from unprotected sun exposure is substantial, with a burn time of just 15 minutes. September sees a decline to a high level (Index 7), allowing for 25 minutes of safe exposure before the index drops again in October and November. Residents and visitors are strongly advised to take precautions during the high UV months, including wearing sunscreen, protective clothing, and seeking shade, especially during midday hours to minimize the risk of skin damage.
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 |
| Senj | 2 | 3 | 5 | 7 | 9 | 10 | 10 | 10 | 7 | 5 | 3 | 2 |