2023图说北京 通过大气污染防治，北京空气质量明显改善。2023年1 - 10月北京PM2.5平均浓度为32μg/m³，比2019年同期下降22%。Through the prevention and control of air pollution, Beijing's air quality has improved significantly. The average concentration of PM2.5 in Beijing from Jan to Oct 2023 is 32μg/m³, a 22% decrease from the same period in 2019.