雾霾是雾和霾的混合物，早晚湿度大时，雾的成分多。白天湿度小时，霾占据主力，相对湿度在80%到90%之间。其中雾是自然天气现象，空气中水汽氤氲。虽然以灰尘作为凝结核，但总体无毒无害;霾的核心物质是悬浮在空气中的烟、灰尘等物质，空气相对湿度低于80%，颜色发黄。气体能直接进入并粘附在人体下呼吸道和肺叶中，对人体健康有伤害。雾霾天气的形成是主要是人为的环境污染，再加上气温低、风小等自然条件导致污染物不易扩散。中国雾霾空气质量最差10个城市：保定、邢台、石家庄、唐山、邯郸、衡水、济南、廊坊、郑州、天津，河北省一省就占据了7席，保定、邢台、石家庄、唐山、邯郸、衡水、廊坊均出现在中国空气质量最差10个城市榜单中，此外山东济南、天津为10城中的另外两城。2016中国城市雾霾排行榜单呼吸困城市排名PM2.5年均值难指数(微克/立方米)1邢台131.42保定127.23石家庄122.64邯郸114.25衡水107.66德州1067菏泽100.68聊城99.89廊坊99.310唐山98.411安阳94.612淄博94.613莱芜93.414宜昌92.115临沂91.916济南9117荆州88.818济宁88.219沧州8820郑州87.621枣庄87.622平顶山87.323寿光86.324天津85.825滨州85.426北京83.227开封82.228合肥8029武汉79.530焦作78.231潍坊78.232东营77.333泰安7734西安75.735三门峡75.536长沙7537渭南74.238南京73.739自贡73.140成都72.841洛阳72.842哈尔滨72.543江阴71.644咸阳71.645株洲71.646湘潭71.447泰州7148沈阳70.949库尔勒70.150鞍山69.951宝鸡69.552南充69.453句容68.954常德68.655阳泉68.156太原67.757宿迁67.658芜湖67.559长治67.260马鞍山6761徐州66.762淮安66.563铜川66.364无锡66.365常州66.266镇江65.867柳州65.768宜宾65.269泸州64.770长春64.671金华64.272苏州64.173张家港63.574扬州63.275溧阳6376乌鲁木齐62.977重庆62.878湖州62.879平度62.780胶南62.581莱州62.482日照62.283西宁62.184瓦房店6285临汾6286锦州6287临安6288招远61.589桂林61.290莱西61.191诸暨6192杭州60.993绍兴60.794义乌60.495连云港60.496南通60.397德阳60.398富阳60.299张家界59.8100吉林59.4101章丘59102秦皇岛59103金坛58.9104兰州58.8105吴江58.7106宜兴57.7107盐城57.5108牡丹江57.3109岳阳57.3110盘锦56.9111胶州56.9112太仓56.6113遵义56.3114本溪56.3115抚顺56.2116嘉兴56117绵阳54.9118葫芦岛54.5119乳山54.1120青岛53.9121承德53.5122海门53.5123包头53.4124衢州53.2125肇庆53.1126昆山53.1127大连*53128常熟52.9129上海52.2130文登51.4131即墨51132石嘴山50.1133南昌49.8134烟台49135揭阳49136蓬莱49137延安48.7138潮州47.9139韶关47.9140南宁47.6141丹东47.6142赤峰47.5143银川47.4144广州47.4145台州46.3146荣成46147宁波45.7148温州45.7149贵阳45.5150东莞44.1151呼和浩特44152佛山44153丽水43.7154大同43.2155江门43.1156九江42.9157大庆42.9158清远41.2159金昌41.2160威海40.7161河源40.2162营口39.4163攀枝花39164汕头38.8165梅州38.5166克拉玛依38.5167茂名37.9168中山37.6169齐齐哈尔37.2170厦门36.3171嘉峪关36.2172阳江36.1173曲靖34.8174惠州34.6175张家口34.3176珠海33.8177北海32.8178汕尾32.7179深圳32.5180云浮32.4181昆明32.2182泉州31.6183福州31.4184舟山29.8185玉溪29.6186湛江28.2187鄂尔多斯27.7188拉萨23.6189海口22.4190三亚18.7
