生态环境部：去年全国环境空气质量历史最优

Core Viewpoint - By 2025, China's air quality is expected to reach historical highs, with PM2.5 average concentration at 28.0 micrograms per cubic meter, marking the best levels recorded since monitoring began [1][2]. Group 1: Air Quality Improvement - The average PM2.5 concentration in cities at or above the prefecture level is projected to be 28.0 micrograms per cubic meter by 2025, with a good air quality day ratio of 89.3% and a heavy pollution day ratio of 0.9%, both representing the best levels recorded [2]. - From July 20 to October 24, 2025, the proportion of good air quality days exceeded 90% for the first time, lasting for 97 consecutive days, benefiting the public significantly [2]. - Six major pollutants are expected to see a reduction of 15%-20% by 2025, with the exception of ozone, which will remain stable [2]. Group 2: Regional Disparities - The ten provinces with the largest reduction in PM2.5 concentration since the start of the 14th Five-Year Plan are all located in northern China, highlighting significant improvements in these areas [3]. - The Beijing-Tianjin-Hebei region and the Fenwei Plain have seen PM2.5 concentrations drop by 27.7% and 32.1%, respectively, contributing nearly 50% to the national air quality improvement despite representing less than one-sixth of the total number of cities [3]. - Linfen, Shanxi, is projected to have a PM2.5 concentration of 35.1 micrograms per cubic meter by 2025, a decrease of 30.5 micrograms, or 46.5%, the largest improvement in the country [3]. Group 3: Economic Growth and Air Quality - During the 14th Five-Year Plan, China's GDP grew by 30%, while PM2.5 concentration decreased by 20%, demonstrating a successful balance between economic development and air quality improvement [4]. - The number of cities meeting air quality standards increased from 206 to 246, a 20% rise, with 29 cities having a GDP exceeding 1 trillion yuan and an average PM2.5 concentration of 27.8 micrograms per cubic meter, better than the national average [4]. - Beijing has achieved a significant reduction in PM2.5 concentration from 89.5 micrograms per cubic meter in 2013 to 27 micrograms per cubic meter in 2025, showcasing a successful long-term air pollution control effort [4].