5 Least Polluted Countries in the World

3. Commonwealth of Australia

Annual average PM2.5 concentration (μg/m³): 4.2

The Commonwealth of Australia is an Oceanic country with the tenth highest GDP per capita in the world of $64,094. However, the country continues to rely on fossil fuels for power generation, with renewable energy accounting for only 30% of the total electricity output. Australia’s air quality policies have contributed to clean air, with governments on both the federal and state level monitoring particulate emissions.