Last updated: June 2, 2025
Understanding the UV Index in Ongi, Mongolia is crucial for both sunburn prevention and maintaining overall skin health. With UV radiation levels reaching a peak of 10 between 12:00 PM and 2:00 PM during the day, awareness of these fluctuations can help residents and visitors protect themselves from harmful effects. Ongi’s Dwc climate—characterized by dry and cold winters and warm summers—presents unique challenges with intensified sun exposure, especially in the warmer months. By keeping an eye on the UV Index, you can enjoy the sun safely while reducing the risk of skin damage.
Today's UV Index presents an intriguing curve, starting the day with a mellow maximum of 1 at 07:00. As the sun climbs higher, things heat up quickly—by 10:00, the index reaches 6, and by 12:00, it peaks at an intense 10. This level remains steady until 14:00, urging sun enthusiasts to take precautions. As the afternoon fades, the UV Index gracefully tapers off, dropping to 4 by 17:00, and finally sinking back to a gentle 1 by 19:00. With mid-day UV levels soaring, it’s crucial to stay protected during those peak hours!
| 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 | 4 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, the UV Index exhibits significant seasonal changes, with the highest values occurring during the summer months. From April to August, the UV Index peaks at 10, indicating a very high risk of harm from unprotected sun exposure, with a critical burn time of only 15 minutes. Conversely, the winter months of January and December show a low UV Index of 2, allowing for safer, extended exposure up to 45 minutes. The high-risk months for sun exposure are clearly identified as April through August, recommending that both visitors and residents take extra precautions during this period. It is advisable to wear protective clothing, use sunscreen, and seek shade, especially when the sun is at its peak. As we transition into September and October, while the risk decreases to high and moderate categories respectively, it’s still essential to be vigilant against UV exposure.
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 |
| Ongi | 2 | 3 | 6 | 10 | 10 | 10 | 10 | 10 | 7 | 5 | 3 | 2 |