Last updated: August 1, 2025
In Lun, Mongolia, being aware of the UV Index is crucial for protecting your skin and overall health. Understanding UV levels helps you plan your outdoor activities and take necessary precautions to prevent sunburn and long-term skin damage. With Lun's Dwc climate, characterized by dramatic temperature swings and intense UV exposure during peak hours—especially from 10:00 AM to 3:00 PM—it's essential to stay informed about the daily UV forecasts. By knowing when the UV Index peaks, you can enjoy the sun responsibly while safeguarding your skin against its harmful effects.
The UV Index reveals a dynamic day of sun exposure, starting with a gentle 1 at 07:00 and gradually ramping up as the morning unfolds. By 09:00, it climbs to 4, reaching a more noteworthy 6 at 10:00. As the sun reaches its zenith, the UV Index peaks at 9 during the crucial hours of 12:00 and 13:00, indicating a high risk of harm from unprotected sun exposure. The intensity begins to wane after 14:00, settling to 7 at 15:00 before gradually decreasing to 1 by 19:00. Remember to protect your skin between 11:00 and 14:00 when the sun’s rays are at their most dangerous!
| 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 | 8 | very high | 15 min |
| 13:00 | 9 | very high | 15 min |
| 14:00 | 8 | 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 presents notable seasonal variations that are crucial for both visitors and residents. During the winter months of January and December, the UV Index is at its lowest (2), indicating a low exposure risk with a burn time of 45 minutes. As spring approaches, February and March see a moderate increase with UV Index values of 3 and 5, respectively, where caution is advised, particularly with a burn time of 30 minutes. The risk peaks in the summer, especially from May to August, when the UV Index reaches 9, categorized as very high, necessitating minimized sun exposure with a burn time of just 15 minutes. April and September follow closely with high (7) and moderate (4) levels, respectively. As winter arrives again, UV levels decrease back to their safer ranges. It is essential for everyone to take proper sun safety measures, particularly during the high-risk months of May through August, by using sunscreen, wearing protective clothing, and seeking shade whenever possible.
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 |
| Lun | 2 | 3 | 5 | 7 | 9 | 9 | 9 | 9 | 7 | 4 | 3 | 2 |
| 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 |