国家气象局提供的天气预报接口
接口地址：
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
以json格式提供，格式如下 {"weatherinfo":{
//基本信息;
"city":"北京","city_en":"beijing",
"date_y":"2011年8月10日","date":"辛卯年","week":"星期三","fchh":"18","cityid":"101010100",
//摄氏温度
"temp1":"24℃~33℃","temp2":"24℃~32℃","temp3":"25℃~31℃","temp4":"23℃~30℃","temp5":"22℃~30℃","temp6":"21℃~32℃",
//华氏温度;
"tempF1":"75.2℉~91.4℉","tempF2":"75.2℉~89.6℉","tempF3":"77℉~87.8℉","tempF4":"73.4℉~86℉","tempF5":"71.6℉~86℉","tempF6":"69.8℉~89.6℉",
//天气描述;
"weather1":"多云","weather2":"晴转多云","weather3":"阴","weather4":"晴转阵雨","weather5":"阵雨","weather6":"多云",
//天气描述图片序号
"img1":"1","img2":"99","img3":"0","img4":"1","img5":"2","img6":"99","img7":"0","img8":"3","img9":"3","img10":"99","img11":"1","img12":"99",
"img_single":"1",
//图片名称;
"img_title1":"多云","img_title2":"多云","img_title3":"晴","img_title4":"多云","img_title5":"阴","img_title6":"阴","img_title7":"晴","img_title8":"阵雨","img_title9":"阵雨","img_title10":"阵雨","img_title11":"多云","img_title12":"多云","img_title_single":"多云",
//风速描述
"wind1":"微风","wind2":"微风","wind3":"微风","wind4":"微风","wind5":"微风","wind6":"微风",
//???
"fx1":"微风","fx2":"微风","fl1":"小于3级","fl2":"小于3级","fl3":"小于3级","fl4":"小于3级","fl5":"小于3级","fl6":"小于3级",
//今天穿衣指数;
"index":"炎热","index_d":"天气炎热，建议着短衫、短裙、短裤、薄型T恤衫、敞领短袖棉衫等清凉夏季服装。",
//48小时穿衣指数
"index48":"炎热","index48_d":"天气炎热，建议着短衫、短裙、短裤、薄型T恤衫、敞领短袖棉衫等清凉夏季服装。"
//紫外线及48小时紫外线
,"index_uv":"中等","index48_uv":"弱",
//洗车
"index_xc":"适宜",
//旅游
"index_tr":"较适宜",
//舒适指数
"index_co":"较不舒适",
//
"st1":"33","st2":"24","st3":"32","st4":"25","st5":"32","st6":"24",
//晨练
"index_cl":"适宜",
//晾晒
"index_ls":"适宜",
//过敏
"index_ag":"极易发"}}
字段言简意赅，城市名，英文名，日期，农历日期，星期，预报时间，城市代码，6个预报温度（华氏温度，摄氏温度），6个预报天气和风力，剩下的就是一些气象指数。