The first image below, courtesy NOAA HMS, shows the fire locations across the United States. The red dots correspond to active fires, and the grey areas are plumes. There are not many plumes from this image. Most of these fires have been burning steadily for the past few days. There are also some small patches of fires in the Mississippi Valley and the Southeast. The image below, courtesy GASP MODIS (Terra satellite), shows the AOD image for the country today. You can see that most of these raised values correspond to more optically thick areas, which correspond to the fires and smoke debris throughout the nation. The raised values in the Pacific Southwest, specifically in southern Nevada, may be due to dust.
The first image below shows the image for EPA AIRNOW AQI values for the Pacific Southwest region. Most of these raised values are due to ozone in the region. The next image, courtesy AIRNOW TECH, shows the PM10 values for Nevada. A few of the sites, such as Sunrise Acres and J.D. Smith in southern Nevada, show very large surface values of PM10. This is due to dust blowing in this region. The image below that shows the NOAA dust forecast that shows that this dust will be moving eastward throughout the week.