Seniors, children and people with chronic health issues are advised to stay indoors and use air conditioning where possible.

The B.C. Centre for Disease Control recommends children and elderly stay indoors during lingering smoke from forest fires.

The smoke has pushed pollution in Calgary and other cities to dangerous levels, and cast an unsettling, spooky haze over almost every part of B.C.

Extreme smoke seems to be a new feature of summers in British Columbia with back-to-back years of heavy wildfires in the province and, for some, the overcast skies are taking a toll on mental health.