Last updated: July 2, 2025
Understanding the UV Index is crucial for residents of Üydzen, Mongolia, where the arid BWk climate exposes inhabitants to heightened sun intensity. The UV levels throughout the day can peak at a significant 10 between noon and 2 PM, making awareness essential for preventing sunburn and maintaining skin health. With the risk of skin damage increasing dramatically as UV rays intensify, being informed about local conditions can empower residents to take proactive measures. Whether you're enjoying outdoor activities or simply spending time in the sun, knowing the UV Index can help you protect your skin and stay healthy year-round.
The UV Index data unveils a dynamic progression of sun intensity throughout the day. Starting low at 1 at 07:00, the index gradually escalates, reaching maximum levels of 10 between 12:00 and 14:00. This peak signals a critical time for sun protection. As the afternoon wanes, the index tapers off to 8 at 15:00, and then descends further to 3 by 17:00, and 2 by 18:00. Ultimately, the day concludes softly with a return to 1 at 19:00. It's essential to stay vigilant during those peak hours to safeguard your skin while enjoying the sun!
| 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 | 10 | 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 | 3 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, the UV Index experiences notable fluctuations, with significant spikes in the late spring and summer months. March marks the beginning of high-risk exposure, climbing to a UV Index of 6, categorized as high, while April and May see very high levels of UV radiation, peaking in June with an extreme UV Index of 11. Following June, the high-risk period continues into July and August, where the Index remains at 10. As summer concludes, September shows a decrease to 7 (high), then further dips throughout the fall and winter months, reaching a low of 2 in January and December. Visitors and residents are advised to take necessary precautions during April to August, ensuring adequate sun protection such as sunscreen, hats, and clothing to minimize the risk of UV exposure and 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 |
| UEydzen | 2 | 3 | 6 | 8 | 10 | 11 | 10 | 10 | 7 | 5 | 3 | 2 |