# 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).

## 中央氣象署紫外線指數 (UVI) 分級與防護對照表

| 指數範圍 | 分級名稱 | 代表燈號 | 曬傷時間 | 戶外防護建議 |
| --- | --- | --- | --- | --- |
| 0 - 2 | 低量級 (Low) | 綠色 🟢 | 超過 60 分鐘 | 正常戶外活動，必要時配戴帽子 |
| 3 - 5 | 中量級 (Moderate) | 黃色 🟡 | 約 30 - 45 分鐘 | 塗抹 SPF15+ 防曬乳、配戴遮陽帽與太陽眼鏡 |
| 6 - 7 | 高量級 (High) | 橘色 🟠 | 約 20 - 30 分鐘 | 塗抹 SPF30+ 防曬乳、撐遮陽傘、戴太陽眼鏡並尋找遮蔭處 |
| 8 - 10 | 過量級 (Very High) | 紅色 🔴 | 約 15 - 20 分鐘 | 10:00-14:00 儘量避免在烈日下曝曬，必備防曬裝備 |
| 11+ | 極高量級 (Extreme) | 紫色 🟣 | 小於 15 分鐘 | 危險級曝曬，應儘量避免外出，外出必備全面防曬與長袖長褲 |

## Medical Information Disclaimer

The calculations, classifications, and lifestyle suggestions this tool provides are for general wellness and self-assessment reference only, and cannot replace a qualified physician's clinical diagnosis, treatment plan, or prescription advice. If experiencing any physical discomfort or health concern, seek professional help from a licensed medical institution and specialist immediately.

## Frequently Asked Questions (FAQ)

### What are the UV Index grading standards?

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).

### How should I protect myself at Very High or Extreme levels?

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.

### Where does the data come from and how often is it updated?

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.

## 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)

## 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)