Lung killer: In Delhi, PM2.5 up to 33 times safe standards

The PM2.5 level in Delhi's Anand Vihar area reached 1,985 micrograms per cubic meter, which is 33 times higher than the national air quality standards and 132 times higher than the WHO safe guideline. However, the level improved within an hour. Other areas in Delhi, such as Rohini and Narela, also recorded high PM2.5 levels. The...