Fascinating. My wife sent me a cutting from a UK newspaper which inferred that London has a pollution/smog problem. It’s all relative. Today’s data for London:

Same site, same index comparison for Bangalore:

And same comparison for Delhi:

So checked out similar comparison for Bangalore and Delhi from India’s Ministry of Environment CPCB site:

Bangalore – for all of our complaints about traffic – still the best metro in India for climate, air quality and plenty more. Namma Bengaluru!