Delhi NCR's air quality has fallen to dangerous levels, prompting closures and bans by the government. An investigation uncovered fake pollution certificates being issued, potentially intensifying the issue.

The GRAP 3 curbs in Delhi include ban on demolition and construction activities, and entry of certain vehicles inside Delhi-NCR, among other curbs, to prevent further deterioration of air quality.

Delhi air quality plummets to alarming levels every year in the winter. The air quality in the capital remains in the 'severe' category prompting the authorities to impose the third stage of GRAP.