Last updated: July 2, 2025
Understanding the UV Index is crucial for residents of Ulaan-Uul, Mongolia, where the climate, classified as BWk, presents unique challenges regarding sun exposure. With UV levels reaching a maximum of 10 around midday, being aware of these fluctuations helps prevent sunburn and protects your skin health. As you plan your outdoor activities, knowing when the UV Index is particularly high allows you to take appropriate precautions against the harmful effects of intense sunlight—essential in a region where mountainous terrains can amplify UV exposure. Stay informed and keep your skin safe while enjoying the beautiful outdoors!
At the break of dawn, the UV Index begins at a low of 1 at 7:00 AM, inviting early risers to enjoy the cool morning air. As the sun climbs higher, the intensity increases, peaking at 10 between 12:00 PM and 1:00 PM—the perfect time to seek shade and protect your skin. The afternoon sees a slight decline, with values dropping to 9 at 2:00 PM and easing down to 5 by 4:00 PM. As evening approaches, the UV levels taper off to 3 at 5:00 PM and return to a safe 1 by 7:00 PM, signaling a gentle close to the sun-soaked day. Remember, during peak hours, it’s crucial to step up your sun protection game!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | 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 | 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 | 1 | low | 45 min |
| 19:00 | 1 | low | 45 min |
As the seasons change, so does the UV Index, reflecting varying levels of sun exposure and associated risks throughout the year. High-risk months typically occur from May to August, during which the UV Index reaches its peak at 10, indicating a very high exposure category and a burn time of only 15 minutes. This highlights the need for extra caution, including the use of sunscreen, protective clothing, and seeking shade during peak sun hours. Conversely, in the winter months of January and December, the UV Index drops to 2, indicating a low exposure category with longer burn times of 45 minutes. Visitors and residents are advised to remain vigilant of UV levels, especially during the warmer months, to protect their skin from harmful effects.
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 |
| Ulaan-Uul | 2 | 3 | 6 | 7 | 9 | 10 | 10 | 10 | 7 | 5 | 3 | 2 |