Karachi has been ranked the most polluted among the top ten major cities, according to the US Air Quality Index. The index released by the Switzerland-based IQAir company says PM2.5 is the main pollutant responsible for the worsening environment situation.
“PM2.5 concentration in Karachi is currently 7.6 times the World Health Organization’s annual air quality guideline value,” IQAir said. Sensitive groups should reduce outdoor activities and use face masks to protect themselves against air pollution. “Observing the data from years past, it appears that pollution levels in Karachi are actually getting worse rather than improving,” the Swiss company said.
Lahore, the capital city of Punjab, has been ranked fifth in the US Air Quality Index. According to the US Air Quality Index,Karachi has been ranked the most polluted among the top ten major cities worldwide.
