Delhi pollution: Indoor air worse than outside, says study

India's capital Delhi has alarmingly high levels of indoor air pollution, new research has found.

The study found that the levels of PM2.5, the lung-damaging tiny particles in the air, indoors were "substantially higher" than those found on the nearest outdoor government monitors.

But despite that, most households have been unwilling to adopt defence measures, the report added.

Delhi city routinely tops the list of "world's most polluted capitals".

The study by the Energy Policy Institute at the University of Chicago (EPIC), conducted between 2018 and 2020, surveyed thousands of Delhi households across varying socio-economic backgrounds and found that rich and poor households were equally affected.