The best and worst places for air quality in 2021, new report shows
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. 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.
Source: cnn.com