Beijing's average PM2.5 concentration dropped to a record low of 26.8 micrograms per cubic meter in the first two months of the year, marking a 29.5 percent decline from last year, the environmental ...

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The initiative helped pressure the Chinese government to clean up the air in Beijing and was later expanded to dozens of ...

Primary sources of pollutants include exhaust emission from Beijing's more than five million motor vehicles, coal burning in neighbouring regions, dust storms from the north and local construction ...

AQI stands for Air Quality Index, which technically only goes to 500. On January 29th, however, Beijing's AQI reached 517.

Nepal’s Kathmandu, China’s Beijing and India’s Mumbai cities occupied the first, second and fourth spots on the list, with AQI scores of 224, 190 and 189, respectively. The AQI, an index for reporting ...