The measurements for IQAir's report come from 30,000 air quality monitors in 131 countries around the world.

IQAir报告的测量数据来自全球131个国家的3万个空气质量监测仪。

The nation's government says this can happen when tiny particles of pollution scatter the sunlight during the day, and it's not a good idea to be outside in it as air quality monitors say it can cause serious health problems.

印度尼西亚政府表示，当微小的污染颗粒物在白天散射太阳光时，就会发生这种情况，根据空气质量检测，这种情况不适宜待在室外，会造成严重的健康问题。