A remarkable situation is evident right now.
Fires over the western U.S. are producing a dense veil of smoke that moved across the continent and then descended over the East Coast.
And there is a great irony in all this: most of the West Coast has excellent air quality while the air is unhealthy over the northeast U.S.
To illustrate this strange situation, here is the latest AIRNOW air quality map showing the air quality based on PM2.5, small particles that can move deep into your lungs. ( I want to acknowledge UW Bothell professor Dan Jaffe, who brought this to my attention)
Green is good air quality while red is unhealthy.