At the interbank forex market, the local unit opened on a weak note at 73.70, then fell further to 73.76, registering a fall of 24 paise over its last close.
The dollar index, which gauges the greenback's strength against a basket of six currencies, rose 0.32 per cent to 93.51.
Meanwhile, the Federal Reserve concluded its two-day policy meeting on Wednesday.
"The US Federal Reserve said it would keep the policy accommodative until inflation moderately overshot 2 per cent for some time. Most Fed members see the federal funds rate at 0 per cent until at least 2023," said Abhishek Goenka, Founder and CEO, IFA Global.
Goenka further said that "while several inflows are queued up, we expect the RBI to continue accumulating reserves and that should limit down side. The yuan is continuing to strengthen and that should limit USD strength against Asian currencies."
On the domestic equity market front, the 30-share BSE benchmark Sensex was trading 124.94 points lower at 39,177.91 and the broader NSE Nifty fell 31.60 points to 11,572.95.
Foreign institutional investors were net buyers in the capital market as they purchased shares worth Rs 264.66 crore on a net basis on Wednesday, according to provisional exchange data.
Brent crude futures, the global oil benchmark, fell 1.07 per cent to USD 41.77 per barrel.
(Only the headline and picture of this report may have been reworked by the Business Standard staff; the rest of the content is auto-generated from a syndicated feed.)