Out of the six common air pollutants, particulate matter measuring 2.5 microns [1/30 of a human hair – Skip] or smaller in diameter, or PM2.5, is accepted as the most harmful to human health. This is due to its prevalence in the atmosphere and the broad range of adverse health effects associated with its exposure, such as heart disease, stroke, lung cancer and chronic respiratory diseases.
With that context in mind, this visualization from Visual Capitalist’s Selin Oğuz and Miranda Smith uses IQAir’s World Air Quality Report to map out the 2022 average PM2.5 concentrations in select major cities around the globe, expressed in micrograms per cubic meter (μg/m³).
(H/T: ZeroHedge,