PM2.5 level in Sanya ranks 352nd lowest among 358 cities in China
The average PM2.5 level in Sanya stood at 19.3µg/m3 in the first half of 2015.
The PM2.5 level in Sanya and Haikou ranked 352nd and 345th lowest respectively among 358 surveyed cities in China in the first half of 2015, according to Greenpeace East Asia.
Data from 358 Chinese cities collected by Greenpeace East Asia show PM2.5 levels fell an average of 16 percent in the first six months from a year ago.
Beijing was ranked as the region with the third-worst levels of PM2.5 in China, behind neighboring Hebei province and central Henan province, slipping from the fourth place in the first quarter. Shanghai was ranked as having the 11th-worst levels, versus a 14th place in the first quarter.
The average PM2.5 level in Sanya stood at 19.3µg/m3 in the first half of 2015 and the average PM2.5 level in Haikou stood at 22.9µg/m3.
PM 2.5, or particulate matter under 2.5 micrometers in size, refers to the fine airborne particles that are considered extremely hazardous to people’s health as they go deeper into the lungs than the larger particles that exist in the air.
The World Health Organization’s recommended maximum annual average is 10µg/m3. Despite the improvement, Greenpeace said PM2.5 levels for the 358 cities surveyed were still more than five times WHO’s guidelines on average.
SOURCE: WOS Team