Data from IQAir's World Air Quality Report reveals the 20 most air-polluted cities on Earth, with Lahore, Pakistan topping the list.
According to the World Health Organization (WHO), almost the entire global population (99%) breathes air that exceeds WHO air quality limits.
In the map below, Visual Capitalist's Selin Oğuz, Miranda Smith, and Bruno Venditti use 2022 average PM2.5 concentrations from IQAir’s World Air Quality Report to visualize the most a...
