天气阅读指南：看懂实时、逐时与 10 日预报
这份指南说明本站不同区域的天气数据分别代表什么、适合怎么用，以及几个最容易被误读的指标。所有数值都来自预报模型与公开接口，理解它们的局限，往往比记住某一个数字更有用。
三种预报，各看什么
实时天气
“实时”是最近一次模型更新后的当前值，通常每 15 到 30 分钟刷新一次。它回答“现在怎么样”：温度、体感、风向风速、湿度、气压和能见度。出门前看它最直接，但它更接近网格点上的插值，而不是某个观测站的读数。
逐时预报
逐时预报按小时列出未来两天的温度、降水概率、风速和紫外线。适合安排一天中的具体时段，例如几点出门跑步、哪段时间可能下雨。越靠后的时段不确定性越大，把它当作趋势，而不是精确的时刻表。
10 日预报
10 日预报给出每天的最高温、最低温和降水概率，用来判断一周内的穿衣与出行方向。第七天以后更适合看趋势：是否转冷、是否有一段持续降雨，而不是纠结某一个具体的度数。
关键指标的实际含义
体感温度
体感温度综合了气温、湿度、风速和日照。夏天湿度高时体感会高于气温，冬天有风时体感会低于气温。它比单纯的温度更接近你出门时的实际感受。
露点与湿度
露点表示空气要冷却到多少度才会开始凝结。露点越接近气温，空气越潮湿、闷热感越强；露点明显低于气温时空气干燥，体感更清爽。相对湿度则随温度变化，单看百分比容易误判。
降水概率
降水概率指“该时段在这个区域出现可测降水的可能性”，既不是降雨量，也不代表一定会下雨。60% 意味着更值得带伞，而不是会下 60% 的雨。
紫外线指数
UV 指数达到 3 以上就建议防晒，6 以上尽量避开正午的长时间暴晒。阴天紫外线仍可能偏高，高海拔和雪面反射的环境尤其要注意。
空气质量
本站同时给出欧洲 AQI 与美国 AQI，数值越低空气越好。敏感人群在中等以上就应减少长时间户外活动。AQI 是健康参考，与能见度并不是一回事。
能见度与气压
能见度低常见于雾、霾、强降水或沙尘。气压持续下降往往意味着天气系统接近，可能转阴或起风。单次读数意义有限，短时间内的变化更有参考价值。
日出日落与月相
日出日落影响体感、通勤和户外安全，月相更多用于夜间活动参考。它们由天文计算得出，与云量无关，因此不会因为阴天而改变。
在本站怎么用
- 搜索或定位：在顶部搜索框输入城市名即可查询全球城市；定位按钮使用浏览器提供的坐标，只有在你授权后才会读取。
- 切换温度单位：摄氏度与华氏度可以一键切换，切换后整页数据同步更新，不需要重新加载。
- 依赖自动刷新：页面每 30 分钟静默更新一次天气数据，切换城市时会立即重新获取，不必手动刷新。
- 添加到主屏幕：需要频繁查看时，可以把本站添加到手机主屏幕，像应用一样打开。
几个常见误区
预报不是承诺
预报是对未来最可能状态的估计。天气系统的微小变化就可能让降雨时间推迟或提前，看到“多云”却遇到阵雨并不罕见。
不同模型会有差异
不同机构使用的模型、分辨率和初始数据各不相同，同一时刻给出不同结果很正常。与其比较谁“更准”，不如关注它们是否指向同一种趋势。
极端天气看官方预警
台风、暴雨、高温等极端天气应以当地气象部门发布的预警为准。本站适合日常规划，不替代官方预警和专业气象建议。
本页内容用于帮助理解天气数据，不构成专业气象建议。
How to read a weather forecast
This guide explains what each block of data on Aether Weather represents, how to use it, and which numbers are easiest to misread. Everything comes from forecast models and public APIs — understanding their limits usually matters more than memorising a single value.
Three forecasts, three jobs
Current conditions
“Current” is the latest model value, refreshed roughly every 15 to 30 minutes. It answers “what is it like right now”: temperature, feels-like, wind, humidity, pressure and visibility. Check it before leaving, but treat it as an interpolated grid value rather than an official station reading.
Hourly forecast
The hourly view lists temperature, precipitation probability, wind and UV for the next two days. Use it to plan a specific part of the day — a run at 7 a.m., or the window between showers. The further out an hour is, the less certain it becomes, so read it as a trend rather than a timetable.
10-day forecast
The 10-day view gives daily highs, lows and rain probability, enough to judge clothing and travel plans for the week. Beyond about day seven, focus on direction — turning colder, a wet spell — instead of exact degrees.
What the metrics actually mean
Feels-like temperature
Feels-like combines air temperature with humidity, wind and sunlight. On a humid summer day it runs above the air temperature; on a windy winter day it runs below. It is closer to what you experience outdoors than the raw thermometer value.
Dew point and humidity
The dew point is the temperature air must cool to before moisture starts condensing. The closer it is to the air temperature, the muggier it feels; a clearly lower dew point means dry, crisp air. Relative humidity changes with temperature, so the percentage alone is easy to misread.
Chance of rain
Precipitation probability is the likelihood of measurable rain in that area during that period. It is not a rainfall amount, and it does not mean it will definitely rain. A 60% chance means an umbrella is worth taking, not that 60% of the rain will fall.
UV index
From UV 3 upwards, sun protection is advisable; at 6 or above, avoid long exposure around midday. UV can still be high under cloud, especially at altitude or where snow reflects sunlight.
Air quality
The site shows both the European and US AQI scales; lower values mean cleaner air. Sensitive groups should cut back on prolonged outdoor activity once levels reach “moderate” or above. AQI is a health reference, not a visibility reading.
Visibility and pressure
Low visibility usually comes from fog, haze, heavy rain or dust. A steadily falling pressure often signals an approaching weather system, with more cloud or wind to follow. A single reading means little; the trend over a few hours is more useful.
Sunrise, sunset and moon phase
Sunrise and sunset affect how the day feels, your commute and outdoor safety. Moon phase is mainly a reference for night-time plans. Both are calculated astronomically and do not change with cloud cover.
Using this site
- Search or locate: type a city into the search box to look up weather worldwide. The location button uses your browser’s coordinates and only reads them after you grant permission.
- Switch units: toggle between Celsius and Fahrenheit with one tap; the whole page updates without reloading.
- Let it refresh: data updates silently every 30 minutes, and choosing a new city fetches fresh data immediately.
- Add to home screen: if you check often, add the site to your phone’s home screen and open it like an app.
Common misconceptions
A forecast is not a promise
A forecast is the most likely future state given current data. Small changes in a weather system can move rain earlier or later, so a “cloudy” day can still bring a passing shower.
Models disagree
Different agencies use different models, resolutions and initial data, so two forecasts for the same hour can legitimately differ. Rather than asking which one is “right”, check whether they point to the same trend.
Extreme weather: follow official warnings
For typhoons, heavy rain, heatwaves and other extremes, follow the warnings issued by your local meteorological service. This site is for everyday planning, not a substitute for official alerts or professional advice.
Back to live weather Data sources and FAQs
This page is written to help you interpret weather data; it is not professional meteorological advice.