Odd-even: Delhi government observes 'declining trend' of pollutants

New Delhi: An interplay of hostile weather conditions made air quality oscillate between 'severe' and 'very poor' in the city on Tuesday, limiting the gains of the 'odd-even' car rationing scheme.

Monitoring stations of Delhi Pollution Control Committee (DPCC), Central Pollution Control Board (CPCB), and the Indian Institute of Tropical Meteorology recorded suspended particulate matters multiple times above the safe limits.

Beijing to toughen car emission standards by 2017 to cut pollution

Beijing plans to ramp up its already tough car emission standards by 2017 in a bid by one of the world's most polluted cities to improve its often hazardous air quality.

Beijing's environment protection bureau, in a document published late on Thursday, said the new standards would be the toughest in the world, and more stringent than the current standards which are equivalent of those used in Europe.

The document did not specify any enforcement measures, but said the standards would cut by as much as half emissions from light gasoline-powered vehicles and heavy diesel-fuelled vehicles.