Last updated: June 2, 2025
Understanding the UV Index is crucial for residents and visitors of Bulagiyn Denj, Mongolia, where the climate zone presents unique sun exposure challenges. With peak UV levels reaching as high as 11 during midday, it's essential to grasp the implications of these numbers for sunburn prevention and overall skin health. By recognizing the daily UV fluctuations, you can take proactive measures to protect yourself from harmful solar radiation, ensuring you enjoy the beautiful outdoors safely. With its Dwc climate, Bulagiyn Denj offers vibrant sunshine, but as UV risks increase significantly, being informed empowers you to stay safe while soaking in the sun.
As the sun rises, the UV Index starts its gradual ascent, beginning at a mild 1 at 07:00. By 09:00, it jumps to 4, marking the emergence of stronger rays. The intensity peaks sharply by 12:00, reaching a significant 10, reflecting the sun's full power. By 13:00, it reaches its zenith at 11, urging caution for those outside. The afternoon sees a gradual decline, dropping to 9 at 15:00 and gradually settling back to 1 by 19:00. Overall, today is a reminder to be sun-safe during peak hours, especially between 11:00 and 13:00 when the UV Index is at its highest.
| 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 | 11 | extreme | 10 min |
| 14:00 | 10 | very high | 15 min |
| 15:00 | 9 | very high | 15 min |
| 16:00 | 7 | high | 25 min |
| 17:00 | 4 | moderate | 30 min |
| 18:00 | 3 | moderate | 30 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, the UV Index exhibits significant seasonal variations, with high-risk months identified primarily between March and September. As the weather warms, the UV Index peaks in June, reaching an extreme category of 11, where the burn time decreases to just 10 minutes. April, May, July, and August follow closely, all categorized as very high with a burn time of 15 minutes. In contrast, winter months like January and December present a much lower UV Index of 2, categorized as low, allowing for a burn time of 45 minutes. Therefore, it’s crucial for visitors and residents to protect their skin during high-risk periods by wearing appropriate sunscreen and clothing, especially from late spring to early fall, while they can take less precaution in the winter months.
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 |
| Bulagiyn Denj | 2 | 3 | 6 | 10 | 10 | 11 | 10 | 10 | 7 | 6 | 3 | 2 |