首页Home › 科学与工程Science & Engineering
🌡️ 体感温度（炎热指数）计算器Heat Index Calculator
按美国国家气象局（NWS）算法由气温和相对湿度计算炎热指数（体感温度）和危险等级。Heat index (feels-like temperature) from air temperature and humidity using the US National Weather Service algorithm, with risk level.
使用说明与常见问题How-to & FAQ
「体感温度（炎热指数）计算器」是什么？What is the Heat Index Calculator tool?
按美国国家气象局（NWS）算法由气温和相对湿度计算炎热指数（体感温度）和危险等级。Heat index (feels-like temperature) from air temperature and humidity using the US National Weather Service algorithm, with risk level.
如何使用「体感温度（炎热指数）计算器」？How do I use the Heat Index Calculator tool?
在「体感温度（炎热指数）计算器」中，填写「气温」、「温度单位」、「相对湿度 %」等参数，结果会随输入实时计算并显示在下方。In the Heat Index Calculator: Fill in "Air temperature", "Unit", "Relative humidity %"; results are recalculated instantly as you type.
为什么温度不高时炎热指数接近气温？Why is the heat index close to the air temperature when it is mild?
按 NWS 算法，简单估算值低于 80 °F（约 26.7 °C）时直接使用简化公式，此时湿度影响很小。Under the NWS algorithm, when the simple estimate is below 80 °F (≈26.7 °C) the simple formula is used and humidity has little effect.
计算结果可以用于作业或工程吗？Can I use the results for homework or engineering?
「体感温度（炎热指数）计算器」使用教科书标准公式（公式写在说明和常见问题中），适合学习和估算核对；涉及安全的工程设计请以规范和实测为准。The Heat Index Calculator uses standard textbook formulas (given in the description and FAQ), which is good for learning and checking estimates; for safety-critical engineering follow codes and measured values.
「体感温度（炎热指数）计算器」免费吗？需要注册吗？Is the Heat Index Calculator free? Do I need an account?
「体感温度（炎热指数）计算器」完全免费，无需注册或安装，打开网页即可使用，手机和电脑都能用；输入的内容只在你的浏览器本地处理。The Heat Index Calculator is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.