Last updated: June 2, 2025
Understanding the UV Index in Har-Us, Mongolia is crucial for safeguarding your skin and overall health, particularly in this semi-arid climate where sun exposure can be intense. With UV levels peaking at 9 during midday hours, awareness of these fluctuations helps residents and visitors alike prevent sunburn and mitigate long-term skin damage. By being informed about the UV Index, you can take proactive measures to protect yourself during the hours of highest risk, ensuring you enjoy the sunny days in Har-Us while keeping your skin safe and healthy.
As the sun rises, the UV Index begins its journey, peaking at 9 between 12:00 PM and 2:00 PM, indicating a strong risk of harm from unprotected sun exposure. Early in the morning, at 7:00 AM, the index starts low at only 1, making it safer for outdoor activities. By 9:00 AM, it increases to a moderate 4, prompting some sun safety precautions. The intensity intensifies, hitting 8 by 11:00 AM and 6 at 10:00 AM, urging those out and about to seek shade. As the afternoon progresses, the UV Index begins to taper off, decreasing to 7 at 3:00 PM, and down to 5 at 4:00 PM, signifying a safer end to the day. By 5:00 PM, it drops to 3, and by sunset at 7:00 PM, it returns to a minimal 1. Stay vigilant and protect your skin during the peak hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 3 | moderate | 30 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 |
Throughout the year, the UV Index experiences significant fluctuations that can impact both residents and visitors. January and December see the lowest UV levels, categorized as low with burn times of 45 minutes. However, as spring approaches, February marks the onset of moderate exposure, transitioning to high levels by March. The summer months, particularly May to August, pose the highest risk with very high UV exposure, featuring burn times as short as 15 minutes. The peak risk is in April and May, where the UV Index reaches 8 and 10 respectively. As fall arrives, UV levels begin to decline, but September remains high with a burn time of 25 minutes. It is crucial for anyone spending time outdoors, especially during the high-risk months of April through August, to take protective measures such as applying sunscreen, wearing protective clothing, and seeking shade during peak hours to reduce the risk of skin damage.
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 |
| Har-Us | 2 | 3 | 6 | 8 | 10 | 9 | 9 | 8 | 7 | 5 | 2 | 1 |
| Khovd UVI | 2 | 3 | 6 | 7 | 10 | 10 | 9 | 9 | 7 | 5 | 2 | 1 |