27.0微克/立方米！2025年北京市PM2.5年均浓度首次“破30”

Core Insights - Beijing has achieved significant improvements in air quality, with PM2.5 annual average concentration dropping below 30 micrograms per cubic meter for the first time, reaching 27.0 micrograms per cubic meter, marking an 11.5% year-on-year decrease [2][3] - The proportion of days with good air quality has exceeded 80% for the first time, reaching 85.2%, with 311 days classified as good air quality in 2025, an increase of 21 days from the previous year [5] - All six major pollutants have met national standards, indicating a comprehensive achievement in air quality compliance [3][6] Group 1 - The annual average PM2.5 concentration in Beijing has decreased from 89.5 micrograms per cubic meter in 2013 to 27.0 micrograms per cubic meter in 2025, representing a reduction of 69.8% [5] - During the 14th Five-Year Plan period, the PM2.5 annual average concentration has consistently met national standards and reached new lows, with a further 30% reduction from 2020 to 2025 [5][6] - The number of heavy pollution days in 2025 was only 1, which is the lowest recorded since monitoring began, showing a decrease of 1 day compared to the previous year [5]