key : Beijing show_desc : 0 pm25 : {"curPm":"103","pm25":"72","pm10":"116","level":3,"quality":"轻度污染","des":"轻微污染 易感人群症状有轻度加剧,健康人群出现刺激症状 心脏病和呼吸系统疾病患者应减少体力消耗和户外活动。"} dateTime : 2016年11月29日10时 cityName : 北京
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