At solar noon (11:54:16 AM) the sun reaches 61.3° above the horizon in Vientiane. Without clouds, that corresponds to a maximum UV index of about 9.4 (very high). Clouds usually lower the real value; snow, sand, water and altitude can raise it.
UV index in Vientiane, next 14 days
| Date | Sun at noon | Clear-sky max | Forecast max |
|---|---|---|---|
| 61.3° | 9.4 Very High | — | |
| 61.0° | 9.3 Very High | — | |
| 60.6° | 9.2 Very High | — | |
| 60.3° | 9.1 Very High | — | |
| 59.9° | 9.0 Very High | — | |
| 59.6° | 9.0 Very High | — | |
| 59.3° | 8.9 Very High | — | |
| 58.9° | 8.8 Very High | — | |
| 58.6° | 8.7 Very High | — | |
| 58.3° | 8.7 Very High | — | |
| 57.9° | 8.6 Very High | — | |
| 57.6° | 8.5 Very High | — | |
| 57.3° | 8.5 Very High | — | |
| 57.0° | 8.4 Very High | — |
Clear-sky values are calculated from the sun's height at solar noon (cloud-free sky, average ozone). Forecast values from Open-Meteo include clouds and load in your browser.
High UV today? Sport sunscreen with SPF 100 stays on through sweat — essential for long outdoor activities.
View on Amazon →About Vientiane
Vientiane is the capital of Laos and has existed as a municipality since 1560. Located along the Mekong River, the city covers an area of 3,920 square kilometres at an elevation of 174 metres. As of 2023, the population is 1,003,004. The city hosts the National University of Laos, the New Laos National Stadium, and the Laos National Stadium. Other notable structures include the National Library of Laos, the Presidential Palace, the Vientiane Jamia Mosque, the Sacred Heart Cathedral, and the Kaysone Phomvihane Museum. Vientiane maintains formal twin town relationships with Bangkok, Chittagong, Phnom Penh, Orlando, and Ho Chi Minh City.
AI-assisted description based on geographic data and editorial notes.