Story highlights
- Some parts of Delhi record air quality index of 999
- City has instituted emergency measures to tackle smog
Measurements taken at the US Embassy in Delhi put the city's Air Quality Index at 999 on Monday, off the standard chart, which finishes at the "hazardous" level of 500.
Protests and pollution masks
In Khan Market, one of Delhi's trendiest areas, shops that specialized in anti-pollution masks were doing brisk business as people queued up to buy some modicum of protection from the toxic smog.
On Sunday, hundreds of people gathered to protest outside Parliament in the city center as others voiced their displeasure online, posting to Twitter with the slogan #MyRightToBreathe.
An emergency ruling issued over the weekend saw more than 5,000 schools closed and construction work halted for the next three days. Officials warned that the number of vehicles allowed on the streets may be restricted if the situation does not improve.