India's air quality framework hasn't been comprehensively revised since 2009 and needs an update, say experts.

India's air quality framework hasn't been comprehensively revised since 2009 and needs an update, say experts.

Delhi's air quality remains 'very poor' with an AQI of 385, as 18 stations report 'severe' conditions.

NEW DELHI: Hundreds of Delhi residents staged a rally on Tuesday, demanding immediate government action to address the worsening air quality in the Indian capital region, where…