Lahore smog soars; Faisalabad’s AQI crosses 1,000

Lahore reclaimed the top spot on the list of the world’s most polluted major cities on Wednesday as a dense blanket of smog choked parts of Punjab and the wider region. IQAir data around mid-morning showed Lahore posting an Air Quality Index (AQI) of 563—firmly in the ‘Hazardous’ category—with PM2.5 concentrations measured at 357 µg/m³, roughly 71 times the World Health Organization’s annual guideline value.

Neighbouring urban centres also reported dangerous levels: New Delhi clocked an AQI of 247 and Beijing 215 (‘Very Unhealthy’), while Karachi stood at 154 (‘Unhealthy’). Faisalabad’s readings were even more alarming, with an AQI of 1037 and PM2.5 near 595 µg/m³—levels considered ‘extremely hazardous.’

Punjab authorities said an emergency plan remains in force, including action against farm fires and smoke-emitting vehicles, alongside the deployment of anti-smog guns at identified hotspots. The province’s Smog Monitoring and Control Centre continues to push real-time data to guide enforcement.

Experts warn that the seasonal inversion, emissions from traffic and industry, and crop-residue burning will keep particulate matter trapped close to the ground through winter, undermining short-term fixes. Physicians have advised residents to limit outdoor exposure, wear masks when necessary, and seek medical consultation if symptoms worsen.