Kuldeep Srivastava, IMD-Delhi: Drastic improvement in air quality will only be observed in the case of heavy rains. Light showers and drizzles won’t better the air quality much.

Kuldeep Srivastava, IMD-Delhi: Drastic improvement in air quality will only be observed in the case of heavy rains. Light showers and drizzles won’t better the air quality much.