Last updated: June 2, 2025
Understanding the UV Index in Hoshigiyn-Ar, Mongolia is crucial for maintaining skin health and preventing sunburn, especially in this semi-arid climate where UV levels can reach alarming heights. With maximum UV readings peaking at 9 from noon to 2 PM, residents and visitors alike should stay informed about daily conditions to protect themselves from harmful ultraviolet rays. By being aware of UV levels throughout the day, you can enjoy the beautiful outdoors while safeguarding your skin from the risks associated with excessive sun exposure. Remember, a little knowledge goes a long way in ensuring your sun safety!
The UV Index throughout the day presents a clear pattern of intensity, peaking at midday. Starting from a mild level of 1 at 07:00, the index rises steadily, reaching 2 by 08:00. The real surge occurs between 09:00 and 13:00, where it escalates from 4 to a striking 9—the highest point of the day. As the afternoon unfolds, the intensity slightly declines to 7 at 15:00, before tapering off to 5 at 16:00. The evening sees a further decrease, settling back to 2 by 18:00 and returning to 1 at 19:00. For those enjoying outdoor activities, it’s essential to take precautions, especially during the peak hours from 11:00 to 14:00 when the UV rays are most potent.
| 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 | 9 | very high | 15 min |
| 13:00 | 9 | 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 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
As the year progresses, the UV Index exhibits notable seasonal changes, impacting sun safety for both visitors and residents. During winter months (January and December), the UV Index remains low (2), allowing for safer outdoor activities with longer burn times of 45 minutes. However, as spring approaches, March sees a moderate increase (UV Index of 5), shortening burn times to 30 minutes. The high-risk months of April through August present significant concern, with UV Index values peaking at 9 and very high exposure category, reducing burn times to just 15 minutes. As summer transitions to fall, September and October witness a decline in UV intensity, but caution remains advisable in September (UV Index 7) with a burn time of 25 minutes. To ensure safety, residents and visitors are encouraged to practice sun protection measures—such as wearing sunscreen, hats, and protective clothing—especially during the peak UV periods from April to August.
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 |
| Hoshigiyn-Ar | 2 | 3 | 5 | 7 | 9 | 9 | 9 | 9 | 7 | 5 | 3 | 2 |
| 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 |