According to the EPA AirNow, the air quality is “unhealthy for sensitive groups” in southern California due to the fine particulate matter concentrations ranging from 40.5 ug/m3 to 65.4 ug/m3. In Los Angeles, the AQI is 170 (98.4 ug/m3) for PM2.5 and 60 (68 ppb) for ozone.
Some very light smoke located in southern Nevada is still visible on MODIS true color images and the HMS map. Concerning the Alaska fires, the situation is improving. The air quality is generally good with few places with PM2.5 levels between 65.4 ug/m3 and 150.4 ug/m3 (EPA AirNow).
MODIS Direct picture and HMS map showing the smoke in gray