[Teacher317]

https://en.wikipedia.org/wiki/List_of_countries_by_carbon_dioxide_emissions

2015 total carbon emissions
China 10.4 billion tons
USA 5.4
EU 3.5
India 2.4
Russia 1.8

Under the Paris Agreement, China promises to peak emissions in 2030 at "only" 34% more than current levels.... 34% of 10.4 is 3.5... in other words, China gets to ADD as much as the entire EU emits today... IF they keep their word... and this is what the current air quality map looks like:

Note hyper-industrial Japan next door, averaging about 70ppm, and China averaging 270ppm... and the US averaging about 45ppm.

[MarchonDC09122009]

A Yuge Thank you for posting this Crucial article and related graphic facts.
Environmentalism has become the world’s new uni-religion just as Gorbachev predicted.

[Teacher317]

Of the top 500 most-polluted cities on earth, China has 100 of the top 222, and 187 in the top 500. The US has zero.

(Poland leads the western world and has quite a few, surprisingly)

https://en.wikipedia.org/wiki/List_of_most_polluted_cities_by_particulate_matter_concentration

Tetovo, Macedonia is the top Western city, at #61... then Tuzla, Bosnia at #122... then Skopje, Macedonia #305... Pszcsyna, Poland #345... but then Poland has 27 more in the final 155 of 500. The Czechs have 5 just barely inside the top 500. Pretty much everyone else is in Asia

[woodbutcher1963]

999 must be the highest the scale goes.
Those places in China with the 999 rating MUST be beautiful places to live(SARC).
It also looks like there is a Indonesia city pegging the needle too.
Mexico City looks to be the worst in the western hemisphere followed by a few places in Chile hemmed in by the Andes Mountains.