In a report to parliament this week, the standing committee on transport, tourism and culture said airborne particles were giving the monument’s white marble a yellow tinge.
Authorities have made various attempts in the past to keep the area around the Taj Mahal pollution free, including setting up an air pollution monitoring station in Agra.
But the committee said that while air pollutants such as sulphur dioxide and nitrous oxide gases were generally within permissible limits, "suspended particulate matter" had been recorded at high levels except during the rainy season.
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photo by Thebigdurian