2026-05-08 10:12:31 +08:00
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# MSN 天气 API 探索报告
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**生成时间**: 2026-05-03
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**探索目标**: 确认 MSN 天气是否有免费可用的 API 接口
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---
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## 一、核心结论
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**MSN 没有官方公开的免费 REST API**,但存在**微软官方内部 API**(通过浏览器抓包获得),在国内访问速度快,可直接调用。
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- ❌ **不是**官方对外公开的 API(无文档、无 SLA)
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- ✅ **是**微软官方的后台接口(`assets.msn.cn` / `api.msn.cn` 均为微软域名)
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- ⚠️ 属于**非公开内部 API**,随时可能变更或失效
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---
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## 二、可用接口汇总
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| 接口 | URL | 功能 | 稳定性 |
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|------|-----|------|--------|
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2026-05-11 08:32:30 +08:00
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| **当前天气** | `https://assets.msn.cn/service/weather/current` | 获取实时天气+nowcasting | ✅ 稳定可用 |
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| **逐小时预报** | `https://assets.msn.cn/service/weather/hourlyforecast` | 未来10天逐小时预报 | ✅ 稳定可用(新增) |
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| **每日预报** | `https://assets.msn.cn/service/weather/dailyforecast` | 未来10天每日汇总 | ✅ 稳定可用 |
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| **天气趋势** | `https://assets.msn.cn/service/weather/weathertrends` | 历史+趋势+日历 | ❌ 已失效(500错误) |
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2026-05-08 10:12:31 +08:00
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| api.msn.cn 当前 | `https://api.msn.cn/weather/current` | 用城市名获取 | ✅ 可用(但城市名不准) |
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| api.msn.cn 预报 | `https://api.msn.cn/weather/forecast` | 预报 | ❌ 500错误 |
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2026-05-11 08:32:30 +08:00
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**推荐**:只用 `assets.msn.cn` 的三个接口(current + hourlyforecast + dailyforecast)即可满足大部分需求。
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2026-05-08 10:12:31 +08:00
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---
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## 三、关键参数说明
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### 必须参数
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- **`apiKey`**: `j5i4gDqHL6nGYwx5wi5kRhXjtf2c5qgFX9fzfk0TOo`
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- 固定值,修改任意字符即返回 401 Unauthorized
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- 从微软 MSN 天气前端代码中提取
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- **`lat`** / **`lon`**: 经纬度(WGS84 坐标系)
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- **`locale`**: 语言区域,如 `zh-cn`、`en-us`
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### 可选参数
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- **`units`**: 温度单位,`C`(摄氏)或 `F`(华氏)
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- **`days`**: 预报天数(dailyforecast 接口,最大10天)
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### 不需要的参数
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- `user`: 测试发现不带也能正常工作
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- `cm`、`ocid`、`fdhead` 等: weathertrends 专用,dailyforecast 不需要
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### 必须请求头
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```http
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User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64)
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Referer: https://www.msn.com/zh-cn/weather
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```
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不带这些请求头会返回 `401 Authorization Required`。
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---
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## 四、调用示例
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### PowerShell 示例
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```powershell
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$apiKey = "j5i4gDqHL6nGYwx5wi5kRhXjtf2c5qgFX9fzfk0TOo"
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$headers = @{
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"User-Agent" = "Mozilla/5.0 (Windows NT 10.0; Win64; x64)"
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"Referer" = "https://www.msn.com/zh-cn/weather"
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}
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# 获取当前天气(北京)
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$uri_current = "https://assets.msn.cn/service/weather/current?apiKey=$apiKey&lat=39.904172&lon=116.407417&units=C&locale=zh-cn"
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$currentResp = Invoke-RestMethod -Uri $uri_current -Headers $headers
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$current = $currentResp.value[0].responses[0].weather[0].current
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Write-Host "温度: $($current.temp)C"
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Write-Host "天气: $($current.cap)"
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Write-Host "体感: $($current.feels)C"
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Write-Host "湿度: $($current.rh)%"
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Write-Host "风速: $($current.windSpd)km/h"
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Write-Host "气压: $($current.baro)hPa"
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Write-Host "紫外线: $($current.uv) ($($current.uvDesc))"
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Write-Host "AQI: $($current.aqi) ($($current.aqiSeverity))"
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# 获取未来7天预报
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$uri_forecast = "https://assets.msn.cn/service/weather/dailyforecast?apiKey=$apiKey&lat=39.904172&lon=116.407417&units=C&locale=zh-cn&days=7"
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$forecastResp = Invoke-RestMethod -Uri $uri_forecast -Headers $headers
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$days = $forecastResp.value[0].responses[0].weather[0].days
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Write-Host "`n未来7天预报:"
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foreach ($day in $days) {
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$d = $day.daily
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Write-Host " $($d.valid.ToString().Substring(0,10)): $($d.tempLo)-$($d.tempHi)C, 降水$($d.precip)%, 风速$($d.windMax)km/h"
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}
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2026-05-11 08:32:30 +08:00
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# 获取逐小时预报(今天剩余小时 + 后续几天)
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$uri_hourly = "https://assets.msn.cn/service/weather/hourlyforecast?apiKey=$apiKey&lat=39.904172&lon=116.407417&units=C&locale=zh-cn"
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$hourlyResp = Invoke-RestMethod -Uri $uri_hourly -Headers $headers
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$todayHourly = $hourlyResp.value[0].responses[0].weather[0].days[0].hourly
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Write-Host "`n今天逐小时预报:"
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foreach ($h in $todayHourly) {
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Write-Host " $($h.valid.ToString("HH:mm")): $($h.temp)C, $($h.cap), 体感$($h.feels)C, 降水$($h.precip)%, 湿度$($h.rh)%, 风速$($h.windSpd)km/h"
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}
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2026-05-08 10:12:31 +08:00
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```
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### curl 示例
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```bash
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# 当前天气
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curl -H "User-Agent: Mozilla/5.0" \
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-H "Referer: https://www.msn.com/zh-cn/weather" \
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"https://assets.msn.cn/service/weather/current?apiKey=j5i4gDqHL6nGYwx5wi5kRhXjtf2c5qgFX9fzfk0TOo&lat=39.904172&lon=116.407417&units=C&locale=zh-cn"
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# 7天预报
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curl -H "User-Agent: Mozilla/5.0" \
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-H "Referer: https://www.msn.com/zh-cn/weather" \
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"https://assets.msn.cn/service/weather/dailyforecast?apiKey=j5i4gDqHL6nGYwx5wi5kRhXjtf2c5qgFX9fzfk0TOo&lat=39.904172&lon=116.407417&units=C&locale=zh-cn&days=7"
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2026-05-11 08:32:30 +08:00
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# 逐小时预报(今天剩余+未来几天)
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curl -H "User-Agent: Mozilla/5.0" \
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-H "Referer: https://www.msn.com/zh-cn/weather" \
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"https://assets.msn.cn/service/weather/hourlyforecast?apiKey=j5i4gDqHL6nGYwx5wi5kRhXjtf2c5qgFX9fzfk0TOo&lat=39.904172&lon=116.407417&units=C&locale=zh-cn"
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2026-05-08 10:12:31 +08:00
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```
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---
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## 五、返回数据结构
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### current 接口响应
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```json
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{
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"@odata.context": "api.msn.com/weather/$metadata#current",
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"value": [{
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"responses": [{
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"weather": [{
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"current": {
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"temp": 20.0, // 当前温度
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"cap": "晴", // 天气描述
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"capAbbr": "晴", // 简短描述
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"feels": 20.0, // 体感温度
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"rh": 14.0, // 相对湿度 %
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"baro": 1006.0, // 气压 hPa
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"windSpd": 25.0, // 风速 km/h
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"windDir": 360, // 风向(度)
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"windGust": 43.0, // 阵风速度
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"uv": 5.0, // 紫外线指数
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"uvDesc": "中等", // 紫外线描述
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"vis": 30.0, // 能见度 km
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"dewPt": -8.0, // 露点温度
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"aqi": 22.0, // AQI指数
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"aqiSeverity": "优", // AQI等级
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"cloudCover": 15.0, // 云量 %
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"created": "2026-05-03T14:29:06+08:00"
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}
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}],
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"source": {
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"location": "北京, 北京市, 中国",
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"coordinates": {"lat": 39.904172, "lon": 116.407417}
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}
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}]
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}]
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}
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```
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### dailyforecast 接口响应
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```json
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{
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"@odata.context": "api.msn.com/weather/$metadata#dailyforecast",
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"value": [{
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"responses": [{
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"weather": [{
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"days": [
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{
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"daily": {
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"valid": "2026-05-03T00:00:00", // 日期
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"tempLo": 8, // 最低温
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"tempHi": 21, // 最高温
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"precip": 5.0, // 降水概率 %
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"windMax": 10.0, // 最大风速
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"windMaxDir": 286, // 风向
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"rhHi": 35.85, // 最高湿度
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"rhLo": 14.0, // 最低湿度
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"icon": 1, // 图标代码
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"symbol": "d000", // 天气符号
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"uv": 5.0, // 紫外线指数
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"uvDesc": "中等"
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}
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}
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// ... 更多天
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]
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}]
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}]
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}]
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}
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```
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2026-05-11 08:32:30 +08:00
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### hourlyforecast 接口响应
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```json
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{
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"@odata.context": "api.msn.com/weather/$metadata#hourlyforecast",
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"value": [{
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"responses": [{
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"weather": [{
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"days": [
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{
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// days[0] = 今天,从当前小时开始到23点
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// days[1..9] = 未来9天,每天24个整点
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"hourly": [
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{
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"valid": "2026-05-11T07:00:00+08:00", // 时间
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"temp": 19.0, // 温度 °C
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"feels": 23.0, // 体感温度 °C
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"cap": "晴", // 天气描述
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"precip": 0.0, // 降水概率 %
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"rh": 61.0, // 相对湿度 %
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"baro": 1009.0, // 气压 hPa
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"windSpd": 4.0, // 风速 km/h
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"windDir": 355, // 风向(度)
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"windGust": 18.0, // 阵风 km/h
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"uv": 1.0, // 紫外线指数
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"cloudCover": 6.0, // 云量 %
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"vis": 10.0, // 能见度 km
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"dewPt": 11.0, // 露点 °C
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"rainAmount": 0.0, // 降雨量 mm
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"snowAmount": 0.0, // 降雪量 mm
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"icon": 1, // 图标代码
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"symbol": "d000", // 天气符号
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"sky": "CLR" // 天空状况代码
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}
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// ... 更多小时
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]
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}
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]
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}]
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}]
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}]
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}
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```
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> **注意**:`days[0].daily` 为 null(今天尚未结束),逐小时数据从 `days[0].hourly` 获取。
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2026-05-08 10:12:31 +08:00
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---
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## 六、多城市验证结果
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| 城市 | 经纬度 | 状态 | 示例数据 |
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|
|------|--------|------|----------|
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| 北京 | 39.904172, 116.407417 | ✅ 正常 | 20°C, 晴, 湿度14% |
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| 上海 | 31.2304, 121.4737 | ✅ 正常 | 21°C, 多云, 湿度54% |
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| 广州 | 23.1291, 113.2644 | ✅ 正常 | 24°C, 多云, 湿度79% |
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| 成都 | 30.5728, 104.0668 | ✅ 正常 | 23°C, 局部多云, 湿度42% |
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---
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## 七、限制与注意事项
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### 1. apiKey 固定
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- 当前 key 硬编码在微软前端代码中
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- 修改任意字符即失效(返回 401)
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- **长期有效性未知**,微软可能随时更换
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### 2. 非公开接口
|
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- 无官方文档
|
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|
- 无 SLA(服务等级协议)保证
|
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|
|
- 数据结构可能随时变更
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### 3. 需要特定请求头
|
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必须携带 `User-Agent` 和 `Referer`,否则返回 401。
|
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### 4. 限流未知
|
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|
|
未测试请求频率限制,建议生产环境加入适当的请求间隔。
|
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|
|
### 5. 城市名接口不可靠
|
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|
|
`api.msn.cn` 使用城市名参数可能返回错误城市(测试"北京"返回了也门首都萨那)。
|
|
|
|
|
|
|
|
|
|
|
|
### 6. 法律合规
|
|
|
|
|
|
- 这是非公开接口,用于个人项目/内部工具问题不大
|
|
|
|
|
|
- **不建议用于商业产品**(随时可能失效,且无使用授权)
|
|
|
|
|
|
|
|
|
|
|
|
---
|
|
|
|
|
|
|
|
|
|
|
|
## 八、推荐方案
|
|
|
|
|
|
|
|
|
|
|
|
### 最简调用方案
|
|
|
|
|
|
|
|
|
|
|
|
```powershell
|
|
|
|
|
|
function Get-MSNWeather {
|
|
|
|
|
|
param(
|
|
|
|
|
|
[double]$Lat,
|
|
|
|
|
|
[double]$Lon,
|
|
|
|
|
|
[string]$Locale = "zh-cn"
|
|
|
|
|
|
)
|
|
|
|
|
|
|
|
|
|
|
|
$apiKey = "j5i4gDqHL6nGYwx5wi5kRhXjtf2c5qgFX9fzfk0TOo"
|
|
|
|
|
|
$headers = @{
|
|
|
|
|
|
"User-Agent" = "Mozilla/5.0 (Windows NT 10.0; Win64; x64)"
|
|
|
|
|
|
"Referer" = "https://www.msn.com/zh-cn/weather"
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
# 当前天气
|
|
|
|
|
|
$currentUri = "https://assets.msn.cn/service/weather/current?apiKey=$apiKey&lat=$Lat&lon=$Lon&units=C&locale=$Locale"
|
|
|
|
|
|
$current = Invoke-RestMethod -Uri $currentUri -Headers $headers
|
|
|
|
|
|
|
|
|
|
|
|
# 7天预报
|
|
|
|
|
|
$forecastUri = "https://assets.msn.cn/service/weather/dailyforecast?apiKey=$apiKey&lat=$Lat&lon=$Lon&units=C&locale=$Locale&days=7"
|
|
|
|
|
|
$forecast = Invoke-RestMethod -Uri $forecastUri -Headers $headers
|
|
|
|
|
|
|
2026-05-11 08:32:30 +08:00
|
|
|
|
# 逐小时预报
|
|
|
|
|
|
$hourlyUri = "https://assets.msn.cn/service/weather/hourlyforecast?apiKey=$apiKey&lat=$Lat&lon=$Lon&units=C&locale=$Locale"
|
|
|
|
|
|
$hourly = Invoke-RestMethod -Uri $hourlyUri -Headers $headers
|
|
|
|
|
|
|
2026-05-08 10:12:31 +08:00
|
|
|
|
return @{
|
|
|
|
|
|
Current = $current.value[0].responses[0].weather[0].current
|
|
|
|
|
|
Forecast = $forecast.value[0].responses[0].weather[0].days
|
2026-05-11 08:32:30 +08:00
|
|
|
|
Hourly = $hourly.value[0].responses[0].weather[0].days
|
2026-05-08 10:12:31 +08:00
|
|
|
|
}
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
# 使用示例
|
|
|
|
|
|
$weather = Get-MSNWeather -Lat 39.904172 -Lon 116.407417
|
|
|
|
|
|
$weather.Current.temp # 当前温度
|
2026-05-11 08:32:30 +08:00
|
|
|
|
$weather.Hourly[0].hourly # 今天逐小时数据
|
2026-05-08 10:12:31 +08:00
|
|
|
|
```
|
|
|
|
|
|
|
|
|
|
|
|
---
|
|
|
|
|
|
|
|
|
|
|
|
## 九、补充:天气图标对照
|
|
|
|
|
|
|
|
|
|
|
|
接口返回的 `icon` 或 `symbol` 字段对应天气图标:
|
|
|
|
|
|
- `0`: 晴天
|
|
|
|
|
|
- `1`: 大部晴朗
|
|
|
|
|
|
- `2`: 局部多云
|
|
|
|
|
|
- `3`: 多云
|
|
|
|
|
|
- `4`: 阴天
|
|
|
|
|
|
- `5-6`: 有雾
|
|
|
|
|
|
- `7-8`: 阴沉
|
|
|
|
|
|
- `9-12`: 阵雨
|
|
|
|
|
|
- `13-18`: 雷雨
|
|
|
|
|
|
- `19-22`: 雨夹雪
|
|
|
|
|
|
- `23-26`: 小雪
|
|
|
|
|
|
- `27-30`: 中到大雪
|
|
|
|
|
|
|
|
|
|
|
|
图标完整 URL:
|
|
|
|
|
|
```
|
|
|
|
|
|
http://img-s-msn-com.akamaized.net/tenant/amp/entityid/AAehR3S.img
|
|
|
|
|
|
```
|
|
|
|
|
|
(其中 `AAehR3S` 是从 `urlIcon` 字段获取)
|
|
|
|
|
|
|
|
|
|
|
|
---
|
|
|
|
|
|
|
|
|
|
|
|
## 十、总结
|
|
|
|
|
|
|
|
|
|
|
|
| 项目 | 结论 |
|
|
|
|
|
|
|------|------|
|
|
|
|
|
|
| 是否有免费 API | ✅ 有(非公开内部接口) |
|
|
|
|
|
|
| 国内速度 | ✅ 快(msn.cn 国内节点) |
|
|
|
|
|
|
| 稳定性 | ⚠️ 未知(非官方,随时可能变) |
|
2026-05-11 08:32:30 +08:00
|
|
|
|
| 数据完整性 | ✅ 完整(当前+逐小时+每日预报+AQI+紫外线+nowcasting) |
|
2026-05-08 10:12:31 +08:00
|
|
|
|
| 推荐用途 | 个人项目、内部工具、原型开发 |
|
|
|
|
|
|
| 不推荐用途 | 商业产品、长期运行服务 |
|
|
|
|
|
|
|
2026-05-11 08:32:30 +08:00
|
|
|
|
## 现状更新
|
|
|
|
|
|
|
|
|
|
|
|
**2026-05-11 更新:**
|
|
|
|
|
|
- `weathertrends` 接口已失效(500 Internal Server Error)
|
|
|
|
|
|
- 新发现 `hourlyforecast` 接口,提供未来 10 天逐小时预报数据,与 `current`、`dailyforecast` 同样稳定
|
|
|
|
|
|
- 云图(卫星/雷达)无 REST API 可用,MSN 网页使用 tile 图片服务(`assets.msn.com/weathermapdata/`),不适合程序化调用
|
|
|
|
|
|
|
2026-05-08 10:12:31 +08:00
|
|
|
|
**建议**:如果用于生产环境,推荐同时准备备用方案(如和风天气、OpenWeatherMap 等)。
|