Core Insights - The overall air quality and surface water quality in China have shown continuous improvement in the first three quarters of this year [1][2][3] Air Quality Summary - The average PM2.5 concentration in 339 cities was 26.0 micrograms per cubic meter, a year-on-year decrease of 5.1% [1] - The average PM10 concentration was 45 micrograms per cubic meter, down 4.3% year-on-year [1] - The proportion of days with good air quality was 87.6%, an increase of 1.8 percentage points year-on-year [1] - The proportion of days with heavy pollution or worse was 1.1%, unchanged from the previous year [1] Regional Air Quality Summary - In the Beijing-Tianjin-Hebei region, the average PM2.5 concentration was 33.0 micrograms per cubic meter, a decrease of 15.6% year-on-year [2] - The proportion of good air quality days in this region was 73.5%, up 8.5 percentage points year-on-year [2] - In the Yangtze River Delta, the average PM2.5 concentration was 29.6 micrograms per cubic meter, down 6.3% year-on-year [2] - The proportion of good air quality days in the Yangtze River Delta was 81.6%, an increase of 2.4 percentage points year-on-year [2] - In the Fenwei Plain, the average PM2.5 concentration was 30.9 micrograms per cubic meter, a decrease of 16.5% year-on-year [2] Surface Water Quality Summary - Among 3,641 national surface water monitoring sections, 89.0% were rated as good quality (Class I-III), an increase of 0.5 percentage points year-on-year [3] - The proportion of sections rated as poor quality (Class V or worse) was 0.7%, unchanged from the previous year [3] - In major river basins, 90.5% of monitoring sections were rated as good quality, an increase of 0.5 percentage points year-on-year [3] - The proportion of poor quality sections in these basins was 0.5%, an increase of 0.1 percentage points year-on-year [3] - Among 209 key lakes and reservoirs monitored, 76.6% were rated as good quality, a decrease of 2.0 percentage points year-on-year [3]
今年前三季度 我国环境空气质量和地表水环境质量总体持续改善
Yang Shi Wang·2025-10-29 09:12