In 2014, World Health Organisation (WHO) declared Delhi as the most polluted in the city in the world. From state government to central government, courts, environmentalists and everyone were worried about the quality of air in the city.
It is ranked 25th in terms of PM 10 (coarse pollution particles) level. As compared to 2104, this time WHO monitored 1400 more cities for its database.
“Delhi has improved. Ahmedabad has stabilized and Patna has worsened. We have seen that Delhi has managed to arrest the declining air quality trend in 2015. But, the levels are still very high in the city, it only shows that action has to be sustained to meet clean targets,”Anumita Roy Chowdhury, executive director, Centre for Science and Environment (CSE) told TOI.