World Air Quality Report 2023

India's Air Quality Ranking

• Ranked third most polluted country with an average annual PM2.5 concentration of 54.4 micrograms per cubic meter.
• Bangladesh and Pakistan surpassed India in pollution levels, ranking as the most and second most polluted countries, respectively.
• Nine out of the top 10 most polluted cities globally are in India.
• Delhi remains the world's most polluted capital city for the fourth consecutive time.

Health Impacts and WHO Guidelines

• Around 136 million Indians, which make up 96% of the population, face PM2.5 concentrations higher than the World Health Organization's recommended levels.
• Over 66% of Indian cities reported annual averages higher than the WHO's guideline of 35 micrograms per cubic meter.
• PM2.5 pollution, primarily from burning fossil fuels, is linked to severe health issues such as heart attacks, strokes, and oxidative stress.

Global Air Quality

• Only seven countries met the WHO's annual PM2.5 guideline, indicating a global challenge in achieving clean air standards.
• Africa remains underrepresented in air quality data, with a significant portion of its population lacking access to such information.
• Some countries like China and Chile have reported decreases in PM2.5 pollution levels, signaling progress in combating air pollution.

Global Impact of Air Pollution

• Air pollution contributes to approximately seven million premature deaths worldwide annually, highlighting its significant public health impact.
• PM2.5 exposure is linked to various health issues, including asthma, cancer, stroke, and mental health complications.
• Elevated levels of fine particles can also impair cognitive development in children and complicate existing illnesses such as diabetes.
• Overall, the report underscores the urgent need for concerted efforts both domestically and internationally to address air pollution and its detrimental effects on public health and the environment.