雾霾haze;
烟雾smog;
空气污染指数air pollution index;
橙色预警orange alert;
悬浮颗粒物airborne particulate matter;
可吸入颗粒物inhalable particle;
有毒物质toxic substance;
空气质量检测air quality monitoring;
实时发布PM2.5数据release real-time PM2.5 data
