Suddenly everybody notices the bad air in Beijing. Finally I am not the only one.
I have been probably one of the first to publicly point out the bad situation. Just check this blog for earlier posts.
See as an example: https://blog.strategy4china.com/?p=3737
But here you can also find historical data about the distorted figures from the Beijing administration, as well as a guide to what we are talking about. All done years ago and still valid:
About the Beijing API charts: https://blog.strategy4china.com/?page_id=2463
About API and AQI and the impact on health by air pollution: https://blog.strategy4china.com/?page_id=2343.
And all the other entries on air pollution.