Top 10 Cities With Best Air Quality Index In The World, All Below An AQI Of 20

As the world battles against poor air quality, a Swiss air quality technology company has categorized countries based on their air quality index, ranging from 0-5 to 50.1 and above. Here are ten cities with the best air quality index, i.e below an AQI of 20.

According to the World Health Organization (WHO), air pollution is a contamination of the indoor and outdoor environment that is caused by chemical, physical or biological agents. As per data, 99 per cent of the population across the globe is exposed to air pollution that exceeds the safe WHO guidelines level for fine particulate matter, PM 2.5.

Causes Of Air Pollution

Studies have shown that outdoor and indoor air pollution can result in certain health conditions by triggering respiratory, cardiovascular and cognitive health. Some of the well-known sources of air pollution are mainly attributed to household combustion devices, motor vehicles, industrial facilities and forest fires.

10 Cities With Best Air Quality Index (AQI)

As the world battles against poor air quality, a Swiss air quality technology company has categorized countries based on their air quality index, ranging from 0-5 to 50.1 and above. Here are ten cities with the best air quality index, i.e below PM 20.

Oslo, Norway 4

A city in Norway, named Oslo, has the best air quality index in the world. As of 24th October, the AQI in Oslo is 1. Many factors contributed to the recent air quality outcome in Oslo, but one key reason is transitioning to electric vehicles.

Detroit, USA 8

Despite having a history of being one of the most polluted cities in the United States, Detroit has finally made it to the best air quality index list with an AQI of 10.

Algiers, Algeria 11

As of 24th October, a city in Algeria, named Algiers, is in the top 10 list of best air quality index with an AQI of 11. It is important to note that air quality does not remain constant and is a temporary snapshot.

San Francisco, USA 12

The air quality in San Francisco is currently below an AQI of 20, which pushed the US city into the top 10 list of cities with the best air quality index.

Toronto, Canada 13

Toronto’s AQI can significantly swing from “good” to “hazardous” within hours to days, due to vehicular and industrial emissions. However, as of 24th October, it remains at an AQI of 11.

Kuching, Malaysia 11

The main reason behind Malaysia’s Kuching city achieving an AQI of 16 is due to many factors, primarily its location is in one of the cleanest parts of the country.

Krak w, Poland 17

As of 24th October, the air quality in Poland’s Krak w is at an AQI of 17. The improved air quality is highly attributed to the administrative restrictions on burning solid fuels like coal and wood for home heating.

Skopje, North Macedonia 18

The Swiss air quality technology company labels Skopje as a notorious city for its poor air quality, which is caused by trapped pollutants. Interestingly, as of 24th October, North Macedonia’s Skopje achieves an AQI of 18.

Krasnoyarsk, Russia 19

Krasnoyarsk typically have a very poor air quality, but as of 24th October, the Russian city achieves an AQI of 19. This pushes the city into the top 10 cities with the best air quality index.