All 40 monitoring stations in Delhi show 'red', meaning AQI in the 'severe' category.

NDTV's Vishnu speaks to Environmentalist Vimlendu Jha and Envirocatalysts Founder and Lead Analyst Sunil Dahiya to discuss this and more

The air quality index (AQI) is a public health tool designed to communicate air pollution levels or the quality of air in simple terms.

Both CPCB and IQAir follow different methods of calculating air quality index, resulting in different numbers.

Cloud seeding is the process of adding special substances to clouds to make it rain or snow in areas experiencing water scarcity, or to reduce hail.