Two South African towns reported the worst air quality in Africa in 2023, both exceeding the World Health Organisation's (WHO) guidelines at least 10 times, according to a new report.
Swiss technology company IQAir released its 2023 World Air Quality report on Tuesday.
Data was collected from more than 30 000 air quality monitoring stations - across 7 812 places in 134 countries and regions. Scientists look at the concentrations of fine pollutant particles in air, PM2.5 to determine rankings.