Last updated: June 2, 2025
Understanding the UV Index is crucial for residents and visitors of Bayangol, Mongolia, especially in the region's distinct BSk climate that features high levels of sunlight. With UV levels peaking mid-day at a striking 11, awareness of these levels is vital for sunburn prevention and overall skin health. By monitoring the UV Index, you can make informed decisions about sun protection to safeguard yourself from the harmful effects of excessive UV exposure, particularly during the intense hours between 11 AM and 2 PM. Stay informed and enjoy the sunny days in Bayangol safely!
As the sun rises, the UV Index starts off low at 2 by 7:00 AM, gradually climbing to 3 by 8:00 AM. By 9:00 AM, it reaches 5, signaling greater vigilance for sun protection. The peak occurs at 12:00 PM with an impressive 10, marking the height of midday sun exposure. The index continues to rise, topping out at 11 at 1:00 PM. As the afternoon progresses, the UV Index begins to descend, dropping to 10 at 2:00 PM and gradually easing to 8 by 3:00 PM. As the sun sets, the index further declines, landing at 2 by 6:00 PM and finally tapering to 1 by 7:00 PM. This clear pattern reminds us to be mindful of sun safety during the peak hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 2 | low | 45 min |
| 08:00 | 3 | moderate | 30 min |
| 09:00 | 5 | moderate | 30 min |
| 10:00 | 7 | high | 25 min |
| 11:00 | 9 | 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 | 8 | very high | 15 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 |
As the seasons change, the UV Index exhibits notable fluctuations, indicating varying levels of sun exposure risk. January and December present the lowest risk with a UV Index of 2, classifying it as low, which allows for longer burn times of 45 minutes. In contrast, from April through July, the UV Index escalates to very high and extreme, peaking at 11 in May, June, and July, where the minimum burn time shrinks to just 10 minutes. Consequently, the months of April to August are considered high-risk for sunburn and UV exposure. Visitors and residents should exercise caution during these periods, applying sunscreen, wearing protective clothing, and seeking shade whenever possible to minimize their risk of skin damage. As fall approaches, the UV Index gradually declines, allowing for moderately manageable conditions in October and November.
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 |
| Bayangol | 2 | 3 | 6 | 9 | 11 | 11 | 11 | 10 | 7 | 5 | 3 | 2 |