Special air quality statements were issued for Calgary and parts of western Alberta Wednesday as heavy wildfire smoke blew in from B.C. The air quality health index was sitting at a 7 — or high risk — in parts of the city at 7 p.m. When the air quality is above 7, Environment and Climate Change Canada suggests reducing or rescheduling strenuous outdoor activities, especially for children and seniors or those experiencing a cough or irritated throat. "Wildfire smoke is a constantly-changing mixture of particles and gasses which includes many chemicals that can harm your health," Environment Canada said. The poor air quality is expected to persist until Thursday.

Source: CBC News July 15, 2021 02:37 UTC