2025年全国环境空气质量实现历史最优

Core Viewpoint - By 2025, the national air quality in China is expected to achieve its best historical level, with significant improvements in key pollution metrics [1] Group 1: Air Quality Improvements - The average concentration of PM2.5 in cities at or above the prefecture level is projected to reach 28.0 micrograms per cubic meter [1] - The proportion of days with good air quality is expected to reach 89.3%, excluding the impact of dust storms [1] - The proportion of heavily polluted days is anticipated to be only 0.9% [1] Group 2: Pollution Reduction Metrics - Over the past five years, six pollutants, including sulfur dioxide, nitrogen oxides, carbon monoxide, ozone, PM2.5, and PM10, have shown a decline [1] - Compared to 2020, the five major pollutants are expected to decrease by approximately 15% to 20% by 2025, achieving historical lows [1]