年度空气质量AQI展示
2020年,市区环境空气中细颗粒物(PM2.5)浓度为31μg/m3,同比降低16.2%;可吸入颗粒物(PM10)浓度为61μg/m3,同比降低17.6%;二氧化硫(SO2)浓度为7μg/m3,同比降低12.5%;二氧化氮(NO2)浓度为31μg/m3,同比降低3.1%;臭氧(O3)浓度为145μg/m3,同比降低1.4%;一氧化碳(CO)浓度为1.2mg/m3,同比降低20.0%。六项污染物浓度均达标,为《环境空气质量标准》(GB3095-2012)实施以来首次全面达标。PM2.5、PM10、SO2、NO2、CO浓度均为《环境空气质量标准》(GB3095-2012)实施以来最低水平。市区空气质量优良率86.3%,排名全省第二。SO2、O3、PM2.5、PM10、CO浓度分别列全省第2、2、3、3、3位,均处于全省前列。全年共出现重度污染天3天,其中1月份2天,12月份1天,未出现严重污染天,与2018年同为《环境空气质量标准》(GB3095-2012)实施以来重污染天最少的年份。与2019年相比,重度污染天数减少4天。
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1 | 135 | 87 | 87 | 144 | 172 | 149 | 97 | 113 | 75 | 44 | 41 | 39 | 73 | 54 | 36 | 52 | 63 | 104 | 117 | 43 | 57 | 77 | 97 | 46 | 37 | 62 | 52 | 60 | 77 | 71 | 103 |
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数据说明:beat365亚洲体育在线_365beat网址_mobile365体育投注备用空气质量日AQI指数计算包括10个国控空气质量子站,发布数据为仪器实时直传,未经审核,仅为当天参考值,不直接用于达标评价,评价城市空气质量依据GB3095-2012进行。