There has been much comment on the clear skies this year in Nanjing, with good reason. Data just released shows that 2020’s average daily level of PM2.5 is as low as 37.7 micrograms per cubic metre (µg/m3), making Nanjing the cleanest city in Jiangsu province. The newly-released figure is correct as of 16 May, according … Continue reading PM2.5 in Nanjing Only 37.7; City is Cleanest in Jiangsu Province