The Air Quality Index in my town is currently 260 (very unhealthy) due to a surge in wildfires in western Canada and the northwest US. There are additional smaller fires not shown on this map at this zoom level.
From the interactive map it looks like the worst air in the world right now.
Welp, we had Friday, didn’t we? (Last week there was an excessive heat wave that kept everyone indoors. Friday was lovely and then on Saturday the smoke came in)
I think the excessive heat wave is part of what caused a bunch of the fires to start/spread. The number of hot spots visible on NASA’s daily satellite imagery exploded from August 14-16.