The B.C. Ministry of Environment and Northern Health canceled the air quality advisory for Prince George on Saturday.
The advisory had been in effect since Thursday. A high-pressure ridge in the area had trapped air pollution from industrial sources and open burning near ground level, the ministry said in a written statement.
That high pressure ridge had moved south of Prince George by Saturday and pollution levels were dropping as of Saturday morning.
As of 11 a.m. on Saturday the level of course particulates measured downtown was 31.1 micrograms per cubic metre of air (below the provincial objective of 50 micrograms).
The level of fine particulates downtown was reported as 24 micrograms per cubic metre of air, below the provincial objective of 25 micrograms per cubic metre.
Current readings for the College Heights monitoring station weren't available as of press time. However as of 8 a.m. on Saturday the level of course particulate measured at the B.C. Rail industrial site was 21.3 micrograms per cubic metre.
People with heart and lung conditions should continue to monitor their health for any changes in symptoms following the air quality advisory, according to information released by Northern Health. Using indoor air filtration systems, especially those equipped with HEPA filtres, can reduce levels of pollution accumulated indoors.