The research analysed these locations based on their average annual visitor numbers and assessed pollution levels using key indicators such as the Air Quality Index, PM2.5 concentrations (tiny air particles harmful to health), water quality index, and noise levels.
One of the world's most popular tourist destinations is also most polluted Despite being a top tourist hotspot, Cairo, Egypt's capital city, has been revealed as one of the world's most polluted destinations.
Despite its high pollution levels, Cairo remains a hugely popular tourist destination, boasting the Great Pyramids of Giza - one of the wonders of the world.
According to a study by DIPNDIVE, the city, which draws in 14.9 million visitors each year, tops the list of ten destinations with the highest pollution levels.
Cairo's Air Quality Index (AQI) was recorded at 160, indicating unhealthy air conditions.
