Delhi's AQI dips to very poor, light rain likely over 2 days

Delhi's air quality deteriorated from 'poor' to 'very poor' on Thursday, with an overall Air Quality Index of 361. The temperature dropped, leading to an increase in biomass burning and vehicular pollution. The data on secondary inorganic aerosols is currently unavailable due to a fault in instruments. The contribution of other sources, such as tire and brake wear, paints, and plastic processing and melting, was 9%. The air quality is expected to remain 'very poor' till December 24, with a possibility of very light rain on Friday night or Saturday morning.