Atmospheric environment quality

In September 2016, November and December, the air quality has declined, the proportion of

good days fell by 5.1, 7.5 and 6.3 percentage points, the concentration of PM2.5

increased by 2.9%, 7.4%, 5.4%.

In November 2016, the Beijing Tianjin Hebei region PM2.5 concentration increased by 8.5%,

a total of five times of heavy pollution, the impact of a very wide range of longer

duration, northeast of Harbin, Anshan and other city PM2.5 hours of peak concentration

even reached 1000 micrograms / cubic meters.

In December 2016, the emergence of large-scale, long time heavy pollution weather,

Beijing and other places to start the red warning, multi burst table. At the same time,

the pollution factor differentiation, becoming the only ozone concentration rose by air

quality six routine monitoring index of pollutants.