Posted: Jul 18, 2021 5:30 PM MT | Last Updated: July 18 Visitors to the Calgary Stampede had to cope an Air Quality Health Index (AQHI) of 10 with wildfire smoke blowing into Calgary on July 18. The 10-day celebration wraps up today, bringing an end to one of the first large-scale events of the pandemic era.(Jeff McIntosh/The Canadian Press)