The most watched rate in India, and what moves it
The dollar to rupee rate matters to a very large number of people: anyone receiving money from abroad, anyone paying for software or education in dollars, anyone importing, and anyone whose salary is quoted in one currency and spent in another.
The rate is not free floating in the way the euro or the pound is. The Reserve Bank of India intervenes to smooth sharp movements, which is why the rupee tends to drift gradually rather than jump, and why a sudden move usually reflects something the RBI has decided to allow rather than the market alone.
Over the long run the rupee has depreciated against the dollar fairly steadily, which is what you would expect from two economies with persistently different inflation rates. That trend matters more than any single day's rate if you are planning a large transfer.