北京在2025年仅遭受一天的严重污染,每年的PM2.5水平首次下降到30以下。 Beijing had just one day of heavy pollution in 2025, with annual PM2.5 levels dropping below 30 for the first time.

北京在2025年只报告了一天的重空气污染,比2013年的58天下降了98.3%,其年均PM2.5水平降至27.0微克/立方米,自记录开始以来首次低于30微克临界值。 Beijing reported only one day of heavy air pollution in 2025, a 98.3% drop from 58 days in 2013, with its annual average PM2.5 level falling to 27.0 micrograms per cubic meter—below the 30-microgram threshold for the first time since records began. 与2013年89.5微克相比,这标志着在“蓝天防御战争”下的持续努力(包括工业改革、排放控制和区域合作)的推动下,2013年的89.5微克有了重大改进。 This marks a major improvement from 2013’s 89.5 micrograms, driven by sustained efforts under the “blue sky defense war,” including industrial reforms, emissions controls, and regional cooperation. 目前,该市每年有348天空气质量良好记录,表明空气质量和公共卫生发生了变革性转变。 The city now records good air quality on 348 days annually, signaling a transformative shift in air quality and public health.