Dalian will release daily monitoring data of PM 2.5 in the latter half of this year, reported Tuesday’s Dalian Daily.

By the end of 2012, 10 environmental monitoring sub-stations in urban areas of Dalian will achieve automatic monitoring of PM 2.5, particulate matter smaller than 2.5 micrometers in size.

Dalian has taken action to improve air quality monitoring system. An automatic monitoring site conducted trial runs of PM 2.5 monitoring last November.