# Taiwan Real-Time UV Index

> The UV Index is an international measure of how intense solar ultraviolet radiation is at ground level. Taiwan's Central Weather Administration grades it into 5 levels: 0-2 Low (green), 3-5 Moderate (yellow), 6-7 High (orange), 8-10 Very High (red), 11+ Extreme (purple).

## Data Sources
- [紫外線指數防護分級與監測標準](https://www.cwa.gov.tw): 交通部中央氣象署 (CWA)
- [紫外線健康影響與防曬衛教指引](https://www.hpa.gov.tw): 衛生福利部國民健康署
- [Global Solar UV Index - A Practical Guide](https://www.who.int/publications/i/item/9241590076): 世界衛生組織 (WHO)

## Related Pages
- [Taiwan Real-Time Air Quality Index (AQI)](https://health.j172.tw/en/tools/aqi)
- [飲水量計算器](https://health.j172.tw/tools/water)
- [Taiwan & Global Significant Earthquake Tracker](https://health.j172.tw/en/tools/earthquakes)

## Frequently Asked Questions (FAQ)
- Q: What are the UV Index grading standards?
  A: Per Central Weather Administration and Ministry of Environment standards: 0-2 is Low (green), 3-5 Moderate (yellow), 6-7 High (orange), 8-10 Very High (red), and 11+ Extreme (purple).
- Q: How should I protect myself at Very High or Extreme levels?
  A: When the UV Index reaches Very High (8-10) or Extreme (11+), sunburn can occur in as little as 15-20 minutes — avoid prolonged sun exposure between 10am and 2pm, and when outdoors, always wear SPF30+ sunscreen, a hat, and sunglasses.
- Q: Where does the data come from and how often is it updated?
  A: This site's UV data syncs from the Central Weather Administration's real-time ground-based weather-station observations nationwide, automatically cross-checked and updated hourly.