I was in Delhi in October for the Gurugram Google meeting @ShreyaMusings
I arrived 2 days earlier just to be able to explore the pending museums.
But the climate on those days was terrible unfortunately and I spent a day just to get acclimatized.
The weather was perfect on the following day, but I had to return.
The next time I am in Delhi, you would be at the top of my list of people to call