The Air District is issuing an air quality advisory due to wildfire smoke from wildfires in the western U.S and Canada for the rest of the day Thursday, August 8, and for Friday, August 9. An inversion layer combined with local pollution and residual smoke from fires in the western U.S. and Canada is impacting air quality in the Bay Area. As onshore winds increase this afternoon and Friday, air quality is expected to be Good to Moderate on the Air Quality Index.