Pakistan has declared a health emergency as Lahore's air quality hits alarming levels, affecting millions with respiratory issues. Authorities have implemented urgent measures, including school closures,

One doctor compared breathing in Pakistan's toxic air to smoking "dozens of cigarettes a day" as Lahore is the world's most polluted city this week.

The authorities have also imposed a "health emergency" in Lahore and Multan districts to combat dense smog blanketing the province of about 130 million population for the last few weeks