Last updated: August 1, 2025
In Hoeviyn Am, Mongolia, being aware of the UV Index is crucial for protecting your skin and overall health. Understanding the levels of ultraviolet radiation is key to preventing sunburn and minimizing long-term skin damage, especially in this high-altitude region where UV exposure can be particularly intense. With a climate classified as ET, locals and visitors face notable UV risks during peak hours, as demonstrated by the index soaring to a staggering 10 between noon and 2 PM. Staying informed about daily UV levels empowers you to take proactive measures, ensuring your outdoor activities are enjoyable and safe under the sun.
As the sun rises, the UV Index begins its steady ascent, starting at a mild 1 at 7:00 AM. By 8:00 AM, it reaches 2, hinting at the day ahead. As we approach mid-morning, the intensity climbs to 3 by 9:00 AM and then dramatically spikes to 5 at 10:00 AM. The real peak occurs between 12:00 PM and 2:00 PM, where the index soars to a whopping 10, indicating strong sun exposure. This midday intensity begins to taper off by 3:00 PM, as it drops to 9, and continues to slide through the late afternoon, ending the day at 1 by 7:00 PM. It's crucial to stay protected during those peak hours to enjoy the sun safely!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 3 | moderate | 30 min |
| 10:00 | 5 | moderate | 30 min |
| 11:00 | 7 | high | 25 min |
| 12:00 | 9 | 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 | 4 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
As the season progresses, the UV Index shows significant variation, impacting exposure risk for visitors and residents. January and December feature low UV levels (Index 2), allowing for safer sun exposure with burn times of 45 minutes. However, danger begins to rise in February (Index 3) and reaches a peak in May, where the UV Index soars to 11, marking the extreme category and reducing safe exposure time to just 10 minutes. The high-risk months, from April to August, require heightened awareness, with indices ranging from 9 to 11, indicating very high to extreme exposure. Visitors and residents are advised to take protective measures, such as wearing sunscreen, protective clothing, and hats, especially during these months, to ensure their safety under the sun. September through November see a tapering off of UV intensity, but precautions remain wise due to moderate indices.
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 |
| Hoeviyn Am | 2 | 3 | 6 | 9 | 11 | 10 | 10 | 10 | 7 | 5 | 3 | 2 |