Last updated: June 2, 2025
Understanding the UV Index in Hajuu-Us, Mongolia, is crucial for protecting your skin and overall health. With UV levels peaking at a significant 10 during midday hours, it's essential to be aware of sun exposure to prevent skin damage and sunburn. This knowledge becomes even more vital in Hajuu-Us, characterized by its semi-arid BSk climate, where clear skies can elevate UV risks more than expected. By staying informed about daily UV fluctuations, you can make better choices for sun safety, ensuring your outdoor activities remain enjoyable and health-conscious.
As the sun rises, the UV Index gently climbs from a mild 1 at 07:00 to a moderate 3 by 08:00. By 09:00, it reaches a passable level of 4, but the real intensity begins to peak as the hour strikes 10:00, reaching 6. The UV Index hits its zenith at 12:00 and 13:00, rocketing to a striking 10, urging everyone to seek shade and wear sun protection. As the afternoon wanes, it gracefully descends: dropping to 9 at 14:00, then tapering off to 7 by 15:00, and gently falling to 5 at 16:00. Evening brings relief, as the index stabilizes at 3 by 17:00, and finally retreats to a comfortable 1 at 19:00. Remember, when the sun's rays are at their fiercest, taking precautions is key to enjoying your day safely!
| 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 | 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 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
As the seasons change, so does the UV Index, significantly impacting sun safety. From January to March, the UV levels remain relatively low to moderate, with burn times ranging from 30 to 45 minutes. Starting in April, the UV Index escalates dramatically, peaking from May to August at a very high level of 10, where burn time drops to just 15 minutes, making these the highest-risk months for skin damage. As fall approaches in September, the risk decreases slightly to high (UV Index 7), followed by a return to moderate levels in October and November. Visitors and residents should take extra precautions during the summer months by limiting sun exposure, wearing protective clothing, and applying broad-spectrum sunscreen frequently. In winter, the UV risk lowers, but it’s still advisable to be cautious, especially on bright days.
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 |
| Hajuu-Us | 2 | 3 | 5 | 8 | 9 | 10 | 10 | 10 | 7 | 5 | 3 | 2 |