生成一段近一个月天气的 json数据

好的，以下是一段近一个月（30天）的天气数据的json格式，供您参考：

{
  "city": "北京",
  "province": "北京市",
  "weather_data": [
    {
      "date": "2022-01-01",
      "weather": "晴",
      "temperature": "-8℃/-18℃",
      "wind": "北风3-4级"
    },
    {
      "date": "2022-01-02",
      "weather": "晴",
      "temperature": "-7℃/-18℃",
      "wind": "北风3-4级"
    },
    {
      "date": "2022-01-03",
      "weather": "阴",
      "temperature": "-6℃/-16℃",
      "wind": "北风4-5级"
    },
    {
      "date": "2022-01-04",
      "weather": "多云",
      "temperature": "-6℃/-15℃",
      "wind": "北风4-5级"
    },
    {
      "date": "2022-01-05",
      "weather": "小雪",
      "temperature": "-5℃/-14℃",
      "wind": "北风4-5级"
    },
    {
      "date": "2022-01-06",
      "weather": "晴",
      "temperature": "-5℃/-14℃",
      "wind": "北风3-4级"
    },
    {
      "date": "2022-01-07",
      "weather": "多云",
      "temperature": "-5℃/-14℃",
      "wind": "北风3-4级"
    },
    {
      "date": "2022-01-08",
      "weather": "晴",
      "temperature": "-4℃/-13℃",
      "wind": "北风3-4级"
    },
    {
      "date": "2022-01-09",
      "weather": "多云",
      "temperature": "-3℃/-12℃",
      "wind": "北风3-4级"
    },
    {
      "date": "2022-01-10",
      "weather": "小雪",
      "temperature": "-3℃/-12℃",
      "wind": "北风3-4级"
    },
    {
      "date": "2022-01-11",
      "weather": "多云",
      "temperature": "-3℃/-12℃",
      "wind": "北风3-4级"
    },
    {
      "date": "2022-01-12",
      "weather": "晴",
      "temperature": "-3℃/-11℃",
      "wind": "北风3-4级"
    },
    {
      "date": "2022-01-13",
      "weather": "多云",
      "temperature": "-2℃/-11℃",
      "wind": "北风3-4级"
    },
    {
      "date": "2022-01-14",
      "weather": "晴",
      "temperature": "-2℃/-10℃",
      "wind": "北风3-4级"
    },
    {
      "date": "2022-01-15",
      "weather": "多云",
      "temperature": "-2℃/-10℃",
      "wind": "北风3-4级"
    },
    {
      "date": "2022-01-16",
      "weather": "小雪",
      "temperature": "-2℃/-10℃",
      "wind": "北风3-4级"
    },
    {
      "date": "2022-01-17",
      "weather": "多云",
      "temperature": "-2℃/-10℃",
      "wind": "北风3-4级"
    },
    {
      "date": "2022-01-18",
      "weather": "晴",
      "temperature": "-2℃/-9℃",
      "wind": "北风3-4级"
    },
    {
      "date": "2022-01-19",
      "weather": "多云",
      "temperature": "-2℃/-9℃",
      "wind": "北风3-4级"
    },
    {
      "date": "2022-01-20",
      "weather": "小雪",
      "temperature": "-2℃/-9℃",
      "wind": "北风3-4级"
    },
    {
      "date": "2022-01-21",
      "weather": "多云",
      "temperature": "-2℃/-8℃",
      "wind": "北风3-4级"
    },
    {
      "date": "2022-01-22",
      "weather": "晴",
      "temperature": "-2℃/-8℃",
      "wind": "北风3-4级"
    },
    {
      "date": "2022-01-23",
      "weather": "多云",
      "temperature": "-2℃/-8℃",
      "wind": "北风3-4级"
    },
    {
      "date": "2022-01-24",
      "weather": "晴",
      "temperature": "-2℃/-7℃",
      "wind": "北风3-4级"
    },
    {
      "date": "2022-01-25",
      "weather": "多云",
      "temperature": "-2℃/-7℃",
      "wind": "北风3-4级"
    },
    {
      "date": "2022-01-26",
      "weather": "小雪",
      "temperature": "-2℃/-7℃",
      "wind": "北风3-4级"
    },
    {
      "date": "2022-01-27",
      "weather": "多云",
      "temperature": "-2℃/-7℃",
      "wind": "北风3-4级"
    },
    {
      "date": "2022-01-28",
      "weather": "晴",
      "temperature": "-1℃/-6℃",
      "wind": "北风3-4级"
    },
    {
      "date": "2022-01-29",
      "weather": "多云",
      "temperature": "-1℃/-6℃",
      "wind": "北风3-4级"
    },
    {
      "date": "2022-01-30",
      "weather": "小雪",
      "temperature": "-1℃/-6℃",
      "wind": "北风3-4级"
    }
  ]
}

上述json数据中，包含了北京市近30天的天气数据。其中，"city"表示城市名称，"province"表示省份名称，"weather_data"是一个包含30个元素的数组，每个元素表示一天的天气情况，包含"date"（日期），"weather"（天气状况），"temperature"（温度），"wind"（风力）四个字段。