The Indian rupee weakened past the psychologically crucial 90 per US dollar mark on Wednesday, extending its rough patch as weakness in trade and portfolio flows alongside worries over a missing trade deal with Washington kept the currency under pressure.
The rupee weakened to a low of 90.13 per US dollar, eclipsing its previous all-time low of 89.9475 hit on Tuesday. It was last down 0.3 per cent on the day.