北京当前空气质量达到1级优
Xin Lang Cai Jing·2026-01-11 08:58
Group 1 - The article discusses the PM2.5 concentration levels in Beijing, indicating a generally low pollution level across various districts [3] - The concentration levels reported are as follows: City’s six districts: 15 µg/m³; Northwest: 9 µg/m³; Northeast: 9 µg/m³; Southeast: 12 µg/m³; Southwest: 14 µg/m³ [3] - The data reflects a positive trend in air quality, suggesting effective environmental monitoring and management practices in the city [3]