The table below shows the ten countries which suffer from worst air pollution based on their yearly PM2.5 concentrations measured in micrograms per cubic meter.
Air pollution continues to be a worldwide urgent concern due to dangerous particulate matter (PM2.5) levels throughout multiple countries especially in New Delhi. The air pollution report from IQAir reveals Chad holds the position as the most polluted nation on Earth followed by Bangladesh and Pakistan.
These countries present the top 10 most polluted nations in the world based on their yearly PM2.5 levels expressed in micrograms per cubic meter.
Top 10 Most Polluted Countries (Annual Average PM2.5 Concentration) Top Polluted Countries
Chad: The country of Chad ranks as the most polluted in the world because its PM2.5 concentration exceeds 91.8 μg/m³. Air pollution in Chad worsens from industrial waste together with desert sand storms.
Bangladesh: As the second most contaminated nation, Bangladesh experiences environmental pollution mainly from brick kilns alongside vehicular emissions and industrial activities.
Pakistan: Pakistan holds the third position in pollution rankings because of crop fire emissions combined with automotive pollution and industrial waste.
India’s Position
India stands as the fifth most polluted nation in the world because its annual PM2.5 concentration reaches 50.6 μg/m³. The major cities of India including Delhi persistently show dangerous pollution levels because of dust from construction sites along with vehicle traffic and industrial emissions.
Regional Variations The list of countries facing severe air pollution includes both developed and developing nations such as Nepal along with Uganda and Rwanda. The regions experience poor air quality because of their economic activities together with their geographical conditions and inadequate pollution control standards.
Impact and Call for Action Air pollution acts as a major health threat because it creates respiratory and cardiovascular disorders that shorten human lives. The pollution damages ecosystems together with agriculture systems and reduces the general quality of existence for people.
