With the score of 3.94, Nepal’s air quality has been reported worse than other countries in the region like Pakistan (176th), China (177th), India (178th) and Bangladesh (179th). Australia secured the highest ranking for clean air while the United States ranked 10th. http://kathmandupost.ekantipur.com/printedition/news/2018-01-25/nepals-air-quality-is-worst-in-the-world-epi-report.html