Less than one-fifth of the cities worldwide met the international criteria for clean air in 2024, a global study has found. The IQAir World Air Quality Report, which analysed data from over 40,000 air ...

Some countries are known for having dangerously high pollution levels, poor sanitation, and large amounts of unmanaged waste. These problems are usually caused by overpopulation, industrial activity, ...

Six out the world’s 10 most polluted cities are in India, while California has the worst air pollution in North America, a new report shows. New Delhi was the most polluted capital city globally, ...

Delhi was the second most polluted city in the country in January after Ghaziabad, as it recorded a monthly average PM2.5 ...

Delhi second most polluted city in India this January, Ghaziabad at top: CREA ...