中国天气网API接口［祥注：使用网页，并设置utf－8编码，则可以看得见json中的中文，解决乱码］

http://www.weather.com.cn/data/sk/101010100.html

http://www.weather.com.cn/data/cityinfo/101010100.html

http://m.weather.com.cn/data/101010100.html

这三个已经停用，数据不再更新，即使修改Referer，得到的已经不是正确的信息。

官网提供的API

一、调用规范 规范用于指导三方合作伙伴合理调用指数、3天常规预报(24小时)预报服务数据。
请求方式：http get
接口组成：由固定URL加5个不同的参数组成，完整URL需客户端经过固定方式加密后使用。
数据返回：json
完整URL：http://open.weather.com.cn/data/?areaid=""&type=""&date=""&appid=""&key=".urlencode($key);
固定URL：http://open.weather.com.cn/data/

需要申请ID

返回数据:

{
	"c": {
		"c1": "101010100",
		"c2": "beijing",
		"c3": "北京",
		"c4": "beijing",
		"c5": "北京",
		"c6": "beijing",
		"c7": "北京",
		"c8": "china",
		"c9": "中国",
		"c10": "1",
		"c11": "010",
		"c12": "100000",
		"c13": 116.391000,
		"c14": 39.904000,
		"c15": "33",
		"c16": "AZ9010",
		"c17": "+8"
	},
	"f": {
		"f1": [{
			"fa": "",
			"fb": "01",
			"fc": "",
			"fd": "13",
			"fe": "",
			"ff": "0",
			"fg": "",
			"fh": "0",
			"fi": "05:17|19:05"
		},
		{
			"fa": "01",
			"fb": "00",
			"fc": "28",
			"fd": "15",
			"fe": "0",
			"ff": "0",
			"fg": "0",
			"fh": "0",
			"fi": "05:16|19:06"
		},
		{
			"fa": "00",
			"fb": "01",
			"fc": "31",
			"fd": "15",
			"fe": "0",
			"ff": "0",
			"fg": "0",
			"fh": "0",
			"fi": "05:15|19:07"
		}],
		"f0": "201604281800"
	}
}

================================================================================

中华万年历API

抓包中华万年历得到的接口（JSON）：

http://wthrcdn.etouch.cn/weather_mini?city=北京
通过城市名字获得天气数据，json数据
http://wthrcdn.etouch.cn/weather_mini?citykey=101010100
通过城市id获得天气数据，json数据

数据和中国天气网（www.weather.com.cn）一致

数据：

{
	"desc": "OK",
	"status": 1000,
	"data": {
		"wendu": "22",
		"ganmao": "各项气象条件适宜，无明显降温过程，发生感冒机率较低。",
		"forecast": [{
			"fengxiang": "南风",
			"fengli": "3-4级",
			"high": "高温 26℃",
			"type": "多云",
			"low": "低温 13℃",
			"date": "28日星期四"
		},
		{
			"fengxiang": "无持续风向",
			"fengli": "微风级",
			"high": "高温 28℃",
			"type": "多云",
			"low": "低温 15℃",
			"date": "29日星期五"
		},
		{
			"fengxiang": "无持续风向",
			"fengli": "微风级",
			"high": "高温 31℃",
			"type": "晴",
			"low": "低温 15℃",
			"date": "30日星期六"
		},
		{
			"fengxiang": "无持续风向",
			"fengli": "微风级",
			"high": "高温 29℃",
			"type": "多云",
			"low": "低温 20℃",
			"date": "1日星期天"
		},
		{
			"fengxiang": "北风",
			"fengli": "4-5级",
			"high": "高温 26℃",
			"type": "小到中雨",
			"low": "低温 13℃",
			"date": "2日星期一"
		}],
		"yesterday": {
			"fl": "微风",
			"fx": "无持续风向",
			"high": "高温 19℃",
			"type": "小雨",
			"low": "低温 12℃",
			"date": "27日星期三"
		},
		"aqi": "118",
		"city": "北京"
	}
}

XML

http://wthrcdn.etouch.cn/WeatherApi?citykey=101010100

通过城市id获得天气数据，xml文件数据,
当错误时会有节点
http://wthrcdn.etouch.cn/WeatherApi?city=北京
通过城市名字获得天气数据，xml文件数据

数据：

<resp>
<city>北京city>
<updatetime>18:45updatetime>
<wendu>22wendu>
<fengli>2级fengli>
<shidu>33%shidu>
<fengxiang>东南风fengxiang>
<sunrise_1>05:19sunrise_1>
<sunset_1>19:06sunset_1>
<sunrise_2/>
<sunset_2/>
<environment>
<aqi>118aqi>
<pm25>61pm25>
<suggest>儿童、老年人及心脏、呼吸系统疾病患者人群应减少长时间或高强度户外锻炼suggest>
<quality>轻度污染quality>
<MajorPollutants>臭氧8小时MajorPollutants>
<o3>185o3>
<co>1co>
<pm10>101pm10>
<so2>4so2>
<no2>24no2>
<time>18:00:00time>
environment>
<yesterday>
<date_1>27日星期三date_1>
<high_1>高温 19℃high_1>
<low_1>低温 12℃low_1>
<day_1>
<type_1>小雨type_1>
<fx_1>无持续风向fx_1>
<fl_1>微风fl_1>
day_1>
<night_1>
<type_1>阴type_1>
<fx_1>无持续风向fx_1>
<fl_1>微风fl_1>
night_1>
yesterday>
<forecast>
<weather>
<date>28日星期四date>
<high>高温 26℃high>
<low>低温 13℃low>
<day>
<type>多云type>
<fengxiang>南风fengxiang>
<fengli>3-4级fengli>
day>
<night>
<type>多云type>
<fengxiang>无持续风向fengxiang>
<fengli>微风级fengli>
night>
weather>
<weather>
<date>29日星期五date>
<high>高温 28℃high>
<low>低温 15℃low>
<day>
<type>多云type>
<fengxiang>无持续风向fengxiang>
<fengli>微风级fengli>
day>
<night>
<type>晴type>
<fengxiang>无持续风向fengxiang>
<fengli>微风级fengli>
night>
weather>
<weather>
<date>30日星期六date>
<high>高温 31℃high>
<low>低温 15℃low>
<day>
<type>晴type>
<fengxiang>无持续风向fengxiang>
<fengli>微风级fengli>
day>
<night>
<type>多云type>
<fengxiang>无持续风向fengxiang>
<fengli>微风级fengli>
night>
weather>
<weather>
<date>1日星期天date>
<high>高温 29℃high>
<low>低温 20℃low>
<day>
<type>多云type>
<fengxiang>无持续风向fengxiang>
<fengli>微风级fengli>
day>
<night>
<type>小雨type>
<fengxiang>无持续风向fengxiang>
<fengli>微风级fengli>
night>
weather>
<weather>
<date>2日星期一date>
<high>高温 26℃high>
<low>低温 13℃low>
<day>
<type>小到中雨type>
<fengxiang>北风fengxiang>
<fengli>4-5级fengli>
day>
<night>
<type>多云type>
<fengxiang>北风fengxiang>
<fengli>3-4级fengli>
night>
weather>
forecast>
<zhishus>
<zhishu>
<name>晨练指数name>
<value>适宜value>
<detail>天气不错，空气清新，是您晨练的大好时机，建议不同年龄段的人们积极参加户外健身活动。detail>
zhishu>
<zhishu>
<name>舒适度name>
<value>较舒适value>
<detail>白天天气晴好，您在这种天气条件下，会感觉早晚凉爽、舒适，午后偏热。detail>
zhishu>
<zhishu>
<name>穿衣指数name>
<value>舒适value>
<detail>建议着长袖T恤、衬衫加单裤等服装。年老体弱者宜着针织长袖衬衫、马甲和长裤。detail>
zhishu>
<zhishu>
<name>感冒指数name>
<value>少发value>
<detail>各项气象条件适宜，无明显降温过程，发生感冒机率较低。detail>
zhishu>
<zhishu>
<name>晾晒指数name>
<value>适宜value>
<detail>天气不错，适宜晾晒。赶紧把久未见阳光的衣物搬出来吸收一下太阳的味道吧！detail>
zhishu>
<zhishu>
<name>旅游指数name>
<value>适宜value>
<detail>天气较好，但丝毫不会影响您出行的心情。温度适宜又有微风相伴，适宜旅游。detail>
zhishu>
<zhishu>
<name>紫外线强度name>
<value>中等value>
<detail>属中等强度紫外线辐射天气，外出时建议涂擦SPF高于15、PA+的防晒护肤品，戴帽子、太阳镜。detail>
zhishu>
<zhishu>
<name>洗车指数name>
<value>较适宜value>
<detail>较适宜洗车，未来一天无雨，风力较小，擦洗一新的汽车至少能保持一天。detail>
zhishu>
<zhishu>
<name>运动指数name>
<value>较适宜value>
<detail>天气较好，户外运动请注意防晒，推荐您在室内进行低强度运动。detail>
zhishu>
<zhishu>
<name>约会指数name>
<value>适宜value>
<detail>天气较好，和恋人一起徜徉于熙攘人群中或漫步于柔软草地上，都是不错的主意哦。detail>
zhishu>
<zhishu>
<name>雨伞指数name>
<value>不带伞value>
<detail>天气较好，不会降水，因此您可放心出门，无须带雨伞。detail>
zhishu>
zhishus>
resp>

一周天气预报接口

http://mobile.weather.com.cn/data/forecast/101010100.html?_=1461845405

1461845405为Unix的时间戳，貌似该参数没有什么用处？

返回数据：

{
	"c": {
		"c1": "101010100",
		"c2": "beijing",
		"c3": "北京",
		"c4": "beijing",
		"c5": "北京",
		"c6": "beijing",
		"c7": "北京",
		"c8": "china",
		"c9": "中国",
		"c10": "1",
		"c11": "010",
		"c12": "100000",
		"c13": "116.391",
		"c14": "39.904",
		"c15": "33",
		"c16": "AZ9010",
		"c17": "+8"
	},
	"f": {
		"f1": [{
			"fa": "01",
			"fb": "03",
			"fc": "10",
			"fd": "5",
			"fe": "0",
			"ff": "0",
			"fg": "0",
			"fh": "0",
			"fi": "06:21|17:40"
		},
		{
			"fa": "07",
			"fb": "07",
			"fc": "19",
			"fd": "12",
			"fe": "0",
			"ff": "0",
			"fg": "0",
			"fh": "0",
			"fi": "06:22|17:38"
		},
		{
			"fa": "02",
			"fb": "00",
			"fc": "15",
			"fd": "5",
			"fe": "8",
			"ff": "8",
			"fg": "3",
			"fh": "1",
			"fi": "06:23|17:37"
		},
		{
			"fa": "00",
			"fb": "00",
			"fc": "16",
			"fd": "4",
			"fe": "0",
			"ff": "0",
			"fg": "0",
			"fh": "0",
			"fi": "06:24|17:35"
		},
		{
			"fa": "00",
			"fb": "00",
			"fc": "18",
			"fd": "7",
			"fe": "0",
			"ff": "0",
			"fg": "0",
			"fh": "0",
			"fi": "06:25|17:34"
		},
		{
			"fa": "00",
			"fb": "01",
			"fc": "18",
			"fd": "8",
			"fe": "0",
			"ff": "0",
			"fg": "0",
			"fh": "0",
			"fi": "06:26|17:32"
		},
		{
			"fa": "01",
			"fb": "01",
			"fc": "16",
			"fd": "6",
			"fe": "0",
			"ff": "0",
			"fg": "0",
			"fh": "0",
			"fi": "06:27|17:31"
		}],
		"f0": "201310121100"
	}
}

日期始终是201310121100，原因是服务器限制了Referer

气象图标下载

http://openweather.weather.com.cn/Home/Help/icon/iid/10.html

获取全国所有城市代码列表

方法一
XML接口根节点： http://flash.weather.com.cn/wmaps/xml/china.xml
XML接口主要作用是递归获取全国几千个县以上单位的城市代码，如：
http://flash.weather.com.cn/wmaps/xml/liaocheng.xml
方法二
更新：最新发现可以一次性获取全国+国外主要城市，8763个城市列表信息。
URL：http://mobile.weather.com.cn/js/citylist.xml