Congress MP Shashi Tharoor took to X (formerly Twitter) and shared Delhi's Air Quality Index (AQI) reaching "371 (hazardous)" on Thursday at 10:07 am. "As November progresses, the burden on the lungs to perform will increase," Tharoor said in the post. Delhi's overall AQI worsened to 264, remaining in the 'poor' category today, according to the Central Pollution Control Board.