Core Insights - The 2025 China Blue Sky Observation Forum was held in Beijing, focusing on the theme "Continuous Improvement of Air Quality: Standards Lead, Health Driven" [1] - The forum released a series of research reports in collaboration with Tsinghua University and Peking University, analyzing the revision of China's air quality standards and its economic impacts [1][2] - The proposed new air quality standard limit of 25μg/m3 for PM2.5 aims to enhance health benefits and drive continuous improvement in air quality [1] Group 1 - The report "Analysis of the Path to Achieve Revised Environmental Air Quality Standards" outlines scenario target values and phased recommendations for revising air quality standards, establishing achievable paths for compliance [1] - The report emphasizes the need for upgrading standards in line with ongoing air quality improvements and reduction measures [1] - The research highlights the synergistic benefits of pollution reduction and carbon emission cuts, along with health benefits associated with the new standards [1] Group 2 - The economic impact assessment report utilizes a computable general equilibrium model to evaluate the macroeconomic effects and cost-benefit analysis of four standard revision scenarios for 2030 and 2035 [2] - Following the WHO's updated global air quality guidelines, the U.S. and EU are set to revise their air quality standards in 2024, tightening PM2.5 annual concentration limits to 9μg/m3 and 10μg/m3 respectively [2] - The study analyzes the triggers, institutional and decision-making processes, scientific evaluation frameworks, and cost-benefit assessments of the U.S. and EU practices, providing valuable insights for China and other countries [2]

锚定"美丽中国"环境持续改善目标，修订PM2.5年均浓度标准限值 自2013年以来，我国实施了三轮清洁空气行动，主要大气污染物排放大幅削减，实现空气质量历史性改善并带来可观的健康效益。为持续提升空气质 量，修订提高标准的需求明确、呼声渐高。尤其是自2020年以来，全国整体PM2.5年均浓度连续五年达标，PM2.5达标城市比例突破七成，现行标准 限值对已达标城市的引领作用明显减弱。此外，世界卫生组织（WHO）于2021年发布新版《全球空气质量指南》，将PM2.5年均浓度指导值由 10μg/m3收紧至5μg/m3。对标之下，我国现行PM2.5限值偏高，亟需通过标准修订进一步强化以健康为导向的清洁空气政策行动。 围绕"标准修订为何种水平更为科学合理、采用何种达标路径更具可行性、实施新标准能够带来多大环境-气候-健康综合效益及其对各部门的影响"等 关键问题，《中国环境空气质量标准修订达标路径分析》在系统梳理我国环境空气质量标准与区域差异的基础上，提出环境空气质量标准修订的情景 目标值与阶段性安排建议，构建了近中期可达的新标准情景，并建立了可实施的达标路径，评估了减污降碳协同效益与健康收益。 "随着空气质量持续改善，标 ...