Last updated: June 2, 2025
Understanding the UV Index is crucial for residents of Chihertey, Mongolia, where the unique high-altitude climate can expose individuals to intense ultraviolet radiation. Recognizing the significance of UV levels is essential not only for sunburn prevention but also for long-term skin health. With a typical UV Index reaching as high as 10 around midday, it's vital for the community to be aware of the potential risks associated with sun exposure. By monitoring the UV Index, residents can better protect themselves during the sunniest hours in this beautiful yet challenging climate.
From 07:00 to 08:00, the UV Index starts off mild with a maximum of 1 to 2, making it a safe time for early outdoor activities. As the sun climbs higher, the UV levels rise sharply, reaching 4 by 09:00 and hitting 6 by 10:00. The intensity peaks at 13:00 with a significant 10, indicating high exposure risk, perfect for applying sunscreen and seeking shade. As we move into the afternoon, levels gradually decrease, tapering to 9 by 14:00 and falling back to a more manageable 4 by 17:00. By evening, UV levels drop to 2 at 18:00 and retreat to 1 by 19:00, marking a safe return for those looking to enjoy twilight outdoors. Remember, it's essential to stay vigilant during those peak hours!
| 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 | 10 | very high | 15 min |
| 14:00 | 9 | very high | 15 min |
| 15:00 | 8 | very high | 15 min |
| 16:00 | 6 | high | 25 min |
| 17:00 | 4 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, the UV Index shows significant seasonal variations that impact sun exposure risk. January and December have the lowest UV levels (Index 2), classified as low risk, allowing for longer safe exposure times of 45 minutes. As we move into February and March, UV levels begin to increase, reaching a moderate level (Index 3) and transitioning to high (Index 7) in March, with burn times decreasing to 30 minutes and 25 minutes, respectively. The high-risk months peak from April to August, where UV Index values consistently hit very high (9-10), necessitating urgent caution with burn times dropping to just 15 minutes. As summer fades into September and October, UV levels decrease, returning to moderate levels in the fall. November sees a slight rise before hitting low levels again in December. Visitors and residents are advised to take extra precautions during high-risk months, including seeking shade, wearing protective clothing, and using sunblock.
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 |
| Chihertey | 2 | 3 | 7 | 9 | 10 | 10 | 10 | 9 | 7 | 5 | 3 | 2 |