Interactive Maps of China’s Most–and Least–Polluted Places
An archival environmental data investigation mapping real-time air quality indices (AQI), PM2.5 particulate concentrations, and coal-industrial emissions across Shijiazhuang, Xingtai, Tangshan, Handan, Hengshui, Langfang, Jinan, Zhengzhou, Harbin, and China's cleanest coastal municipalities.