Oman has the least pollution among Arab countries

Muscat: The Sultanate has been ranked last in a list of the highest polluted countries in the Arab world. The World Health Organisation, which released these scores ranked Oman last with a score of 37.7 in the pollution index.

As the World Health Organization's air pollution data table shows on numbeo.com, Muscat ranked 229th in the world and 112th in Asia among the list of highest polluted cities.