The streak began in early November as the winter pollution season took hold, but unlike previous years, farm fires have contributed far less to the crisis.

Experts say many of Delhi’s air quality monitoring stations may give inaccurate readings, because they are not placed properly — for example, too close to trees or buildings, or near roads.

These faults make it hard to trust whether the reported pollution levels reflect real “clean air” conditions.

Delhi’s air quality has worsened significantly in 2023-24, with PM2.5 and PM10 levels rising despite various government measures like PUC audits, mist sprayers and EV infrastructure. Experts stress that superficial fixes are inadequate, urging a comprehensive approach to reduce pollution at its source from transport, power and waste, advocating for systemic change and strict enforcement for breathable air.