The analysis also said that there were twice as many ‘bad’ air days in Delhi last year as there were in Beijing, and only a week’s worth of ‘excellent’ air where there were more than 100 days in the Chinese capital.
According to the Chinese state, a ‘bad’ air day is one in which PM2.5 levels in excess of 150 micrograms per cubic metre, whilst an ‘excellent’ day means there’s been less than 35 micrograms.
These findings echo a recent analysis by the New York Times that said Delhi air pollution has been 45% worse than Beijing over the past two years.