China's air and water quality continued to improve in the first half of 2025, said Pei Xiaofei, spokesman for the Ministry of Ecology and Environment, on Monday.
The proportion of days with good air quality in the 339 cities at or above the prefecture level reached 83.8 percent in this period, up one percentage points from the previous year, Pei told a press conference.
The average density of PM2.5, a key indicator of air pollution, stood at 32.1 micrograms per cubic meter in the first six months, down 2.4 percent year on year, he said.
"Among the key areas, the average proportion of days with good air quality in Beijing, Tianjin, Hebei and surrounding areas increased by 9.9 percentage points year on year. In the Yangtze River Delta region, it rose by 1.6 percentage points. An in the Fenhe-Weihe River Plain, it increased by 7.1 percentage points," said Pei.
In terms of the water quality, of the 3,641 national surface water assessment sections, 89 percent were graded Class I to Class III (good quality) in the country's five-tier water quality system, representing a year-on-year increase of 0.2 percentage points.
China sees substantial improvements in water, air quality in H1
