12. Canada
Many cities in this country got great results for air quality, but they will need some additional improvements. Canada is fighting with the bad air and here are its results – the median PM2.5 is 7, the death rate is 25 per 100,000 capita, and it has a population of 36,624,199.
![Countries with the Cleanest Air in the World in 2018](https://imonkey-blog.imgix.net/blog/wp-content/uploads/2017/03/27060700/shutterstock_370678673-750x500.jpg?auto=fortmat&fit=clip&expires=1756080000&width=480&height=320)
kavram/Shutterstock.com