Vanderhoof, B.C. –  Another  Air quality advisory is in effect  Vanderhoof due to high levels of fine particulate.The Ministry of the Environment  says elevated PM2.5 concentrations are resulting from still air and poor dispersion. The cause of still air is a high pressure system located on the B.C. – Yukon border, which looks set to persist for the next 2 days.
The provincial air quality objective for PM2.5, is 25 micrograms per cubic metre (mg/m3), averaged over 24 hours.  The  24-hour average PM2.5 concentrations  for Vanderhoof  were  31 mg/m3 at 8 this morning.

Concentrations are expected to remain elevated until Thursday.