The 35-year-old actor was scheduled to arrive in her hometown today but could not land at the airport due to the fog.
"I am heartbroken that I will not be able to attend the convocation ceremony and receive my honorary doctorate in person at the Bareilly International University today.
"We've been at the airport since this morning waiting for clearance from the ATC. My team had also explored all other possible options to get there but the fog has put to rest all plans for today," Priyanka said in a statement.
"I was really looking forward to going back to Bareilly... Not just to receive the honorary doctorate but also to see old friends and family and just reconnect with a city that has been such an important part of my life," she added.
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The ceremony was to be attended by Union Environment Minister Harsh Vardhan and Uttar Pradesh Finance Minister Rajesh Agarwal.
Priyanka also expressed gratitude to the university for understanding the situation.
"I want to thank the University for being so understanding and amazing and I would to wish every graduate all the very best as they set forth on a new journey. I will see you all again very soon," she said.
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