《环境空气质量标准（征求意见稿）》与配套技术规范修订系列解读①

Core Viewpoint - The Ministry of Ecology and Environment is seeking public opinion on the draft revision of the "Ambient Air Quality Standards" (GB 3095—2012), highlighting the need for updated standards to further protect public health and align with international benchmarks [1][3][4]. Group 1: Achievements of Current Standards - The implementation of the current "Ambient Air Quality Standards" has significantly improved air quality in China, with PM2.5 annual average concentration decreasing from 46 µg/m³ to 29.3 µg/m³, a reduction of 36% [1] - By 2024, 222 cities (65.5% of all cities) will meet air quality standards, marking a historical high [1] - Major pollutants like PM10, SO2, NO2, and CO have also seen reductions exceeding 25% [1] Group 2: Reasons for Revising Standards - The revision aims to further safeguard public health, as studies indicate significant health risks from air pollutants like PM2.5, PM10, SO2, and NO2 [3] - The revision supports the goals of building a "Beautiful China," with targets to reduce PM2.5 concentrations to below 28 µg/m³ by 2027 and below 25 µg/m³ by 2035 [3][4] - The need to align with international air quality standards, as many countries have set stricter PM2.5 limits, is also a driving factor for the revision [4] Group 3: Principles of the Revision - The revision focuses on public health, particularly the impacts of PM2.5 pollution [5] - It considers China's development stage and aims to set reasonable limits based on international benchmarks, with a target of achieving PM2.5 levels below 25 µg/m³ by 2035 [5] - A scientific approach is adopted, utilizing key technologies and methods developed during the "14th Five-Year Plan" to support the revision [6] Group 4: Changes to Pollutant Concentration Limits - The PM2.5 annual average concentration limits will be tightened to 10 µg/m³ for Level I and 25 µg/m³ for Level II [7] - PM10 limits will also be adjusted, with annual average concentrations set to 20 µg/m³ for Level I and 50 µg/m³ for Level II [8] - SO2 and NO2 limits will be revised to reflect health impacts and current pollution control levels, with NO2 limits set to 30 µg/m³ for annual averages [9] Group 5: Adjustments to Evaluation Methods - The revision includes updates to the "Air Quality Index (AQI) Technical Regulations" to improve public health information dissemination [10] - The "Ambient Air Quality Evaluation Technical Specifications" will be revised to enhance the assessment of air quality, incorporating international best practices [10]