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LONDON, UNITED KINGDOM - APRIL 10: The Honourable Artillery Company fire a gun salute at The Tower of London on April 10, 2021 in London, United Kingdom. The Death Gun Salute will be fired at 1200 marking the death of His Royal Highness, The Prince Philip, Duke of Edinburgh. Across the country and the globe saluting batteries will fire 41 rounds, 1 round at the start of each minute, for 40 minutes. Gun salutes are customarily fired, both on land and at sea, as a sign of respect or welcome. The Chief of the Defence Staff, General Sir Nicholas Carter, said "His Royal Highness has been a great friend, inspiration and role model for the Armed Forces and he will be sorely missed." (Photo by Chris Jackson/Getty Images)
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Matt Dunham/AP
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(CNN) —  

Actress Priyanka Chopra has posted a picture of herself wearing a mask while filming in New Delhi, as the heavily polluted Indian capital grinds to a halt amid “unbearable” levels of smog.

“It’s so hard to shoot here right now that I can’t even imagine what it must be like to live here under these conditions,” Chopra wrote on Instagram Sunday, while authorities in the city scrambled to deal with smog so toxic it grounded flights and forced schools to close their doors.

“We r blessed with air purifiers and masks. Pray for the homeless. Be safe everyone,” Chopra added, alongside a call for “solutions” to the crisis.

The pollution, described as “unbearable” by Delhi’s chief minister and registered as hazardous on the global air quality index (AQI), is set to envelop the region for at least another week.

A public health emergency has been declared in the city, where authorities have halted work at construction sites, handed out face masks to millions of children and instituted new traffic controls limiting the number of cars on the road.

Most residents who can afford to are staying home, though working class Delhiites are left with little choice but to venture outside.

Chopra drew further attention to the crisis while on the set of “The White Tiger,” a Netflix adaptation of Aravind Adiga’s 2008 novel. While growing up, the actress moved between several cities in India, which contains 22 of the world’s 30 most-polluted urban areas.

Vehicles wait at a crossing amid morning smog in New Delhi on Sunday.
Manish Swarup/AP
Vehicles wait at a crossing amid morning smog in New Delhi on Sunday.

Smog in Delhi – already ranked as the most polluted city in the world – worsens at this time of year as temperatures drop and farmers light fires to clear their land.

But this year’s smog has been much worse than usual. “Life in the smog is very strange,” Siddharth Singh, a resident of Noida, a satellit