Interesting to remember that much the same thing happened in London not so long ago:
https://en.wikipedia.org/wiki/Great_Smog
So maybe there's hope Delhi will clean itself up in the near future.
So maybe there's hope Delhi will clean itself up in the near future.
But it's nothing remotely like the scale of disaster that India has, where there is often constant choking smoke enveloping entire cities and regions. Even China is clean by comparison.
Air Quality targets have become massively more demanding.