These were the best and worst places for air quality in 2021, new report shows

A report by IQAir, a company that tracks global air quality, found that average annual air pollution in every country — and 97 per cent of cities — exceeded the World Health Organization's air quality guidelines, which were designed to help governments craft regulations to protect public health.

The report by IQAir, a company that tracks global air quality, found that average annual air pollution in every country — and 97% of cities — exceeded the World Health Organization's air quality guidelines, which were designed to help governments craft regulations to protect public health.

Only 222 cities of the 6,475 analyzed had average air quality that met WHO's standard. Three territories were found to have met WHO guidelines: the French territory of New Caledonia and the United States territories of Puerto Rico and the US Virgin Islands.

India, Pakistan and Bangladesh were among the countries with the worst air pollution, exceeding the guidelines by at least 10 times.

The Scandinavian countries, Australia, Canada, Japan and United Kingdom ranked among the best countries for air quality, with average levels that exceeded the guidelines by 1 to 2 times.