Muscat is the least polluted city in the Middle East, according to data from Numbeo.
The database website, which collects data on cities across the globe based on surveys, gave the Sultanate’s capital a pollution index rating of 37.88.
Muscat came in 78th globally out of the 309 cities included in the ratings. The second least polluted city in the Middle East was Abu Dhabi in the United Arab Emirates at 121st.
The pollution index is based on polls with questions about air quality, drinking water and green spaces and parks in the city.
Air pollution was given a low rating of 34.19, water pollution 37.93 and dissatisfaction with parks and green spaces 30.
The least polluted city in the world is Helsinki in Finland.
Out of the other Gulf States, Jubail in Saudi Arabia is 203rd, while Riyadh is 206th.