Last updated: July 2, 2025
In Tsomog, Mongolia, being aware of the UV Index is crucial for maintaining skin health and preventing sunburn. Understanding the daily UV levels helps residents and visitors alike make informed decisions about sun protection, especially during peak hours when the UV Index soars to 10 between noon and 1 PM. Tsomog's BSk climate brings plenty of sunshine, increasing the risk of harmful UV exposure. By staying informed about the UV Index, you can enjoy outdoor activities while safeguarding your skin against damage from the sun's powerful rays.
As the sun rises, the UV Index starts its ascent, with a gentle 1 at 07:00. By 08:00, it begins to climb, reaching 2, signaling a reminder to take care. The real intensity kicks in at 10:00, where the index peaks at 6, escalating to a scorching 9 by noon. The hottest moment arrives at 13:00, showcasing a dramatic 10—a level that demands serious sun protection. Although the UV level begins to drop after this peak, it remains notable; at 14:00, it settles at 9, then declines gently, hitting 3 by 17:00. As daylight fades towards the evening, it tapers off to 2 at 18:00 and finally returns to a safe 1 by 19:00. It's a vivid reminder of the sun's power throughout the day!
| 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 | 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, the UV Index exhibits significant seasonal variations, influencing the risk of sun exposure for both residents and visitors. January and December have a low UV Index of 2, allowing for a burn time of 45 minutes. As the months progress, February and March see a rise to a moderate UV Index of 3 and 5, resulting in 30 minutes of burn time. April marks the transition to a high category with a UV Index of 7, leading to a burn time of 25 minutes. The peak UV months are May, June, and July, where the Index reaches 9 and 10, indicating a very high risk and a burn time of only 15 minutes. While August sees a slight decrease to 9, the risk remains significant. September returns to high at 7, with 25 minutes of burn time, before tapering off to moderate levels in October and November. Visitors are strongly advised to take precautions from April to August, wearing appropriate sun protection, seeking shade, and limiting sun exposure during peak hours to reduce 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 |
| Tsomog | 2 | 3 | 5 | 7 | 9 | 10 | 10 | 9 | 7 | 5 | 3 | 2 |