Air pollution was recorded at “hazardous” levels in the Chinese capital.
This was the view from an observatory tower in Beijing on Thursday.
According to the South China Morning Post, the US embassy recorded an air quality index reading of 545 during the afternoon; any reading over 300 is said to be “hazardous”.
An average reading of 430 was also recorded by Beijing Municipal Environmental Protection Bureau, marking the worst smog the Chinese city has suffered so far this year.
Kim Kyung Hoon / Reuters
Time magazine said visibility in the city was expected to fall to as little as 500 metres.
Kim Kyung Hoon / Reuters
Beijing has been on a "yellow alert" regarding its pollution since the weekend.
The alert is the third highest level in a four-tier system, the South China Morning Post explained.
Kim Kyung Hoon / Reuters
Smog in the Chinese capital tends to be worse in the winter because the demand for electricity for heating increases, AFP reported.
Kim Kyung Hoon / Reuters
