According to data shared by World Statistics, Australia tops the list of countries that met WHO's PM2.5 air pollution guidelines by 2023, followed by Estonia and Finland.
Let's take a look at the top 7 countries that met WHO’s PM2.5 Air Pollution Guideline 2023 (annual average of 5 μg/m3 or less):
New Zealand is the seventh country on this list that fulfilled WHO's PM2.5 air pollution guidelines.
Mauritius takes the sixth spot on this list.
Iceland is the fifth country that met WHO's PM2.5 air pollution guidelines.
Grenada, a country in the Caribbean, is the fourth country that fulfilled WHO's PM2.5 air pollution guidelines by 2023.
Finland, a Northern European nation bordering Sweden, Norway and Russia, takes the third spot.
Australia tops the list of countries that fulfilled WHO's PM2.5 air pollution guidelines by 2023.