India ranks fifth in the world and has 13 of the 20 most polluted cities.

13 of the top 20 most polluted cities in the world are located within India's borders, according to a new air quality assessment that was released on Tuesday. According to the Swiss air quality technology company IQAir's 2024 World Air Quality Report, Byrnihat, Assam, is the most polluted city on Earth. Delhi continues to be the world's most polluted metropolis, and India dropped from third place in 2023 to fifth place in 2024.

As per the research, PM2.5 concentrations in the nation decreased by 7% in 2024, averaging 50.6 micrograms per cubic meter, as opposed to 54.4 micrograms per cubic meter in 2023. Despite all of those advancements, India still has six of the top ten most polluted cities in the world.

The average annual PM2.5 concentration in Delhi was 91.6 micrograms per cubic meter, which was almost unchanged from 92.7 micrograms per cubic meter in 2023. The city has continuously high pollution levels.