The map shows the distribution of smoke generated by wildfires.
Below is information from NOAA about smoke observed in satellite imagery today:
New Mexico/Arizona: Wildfires burning in northern and southwest New Mexico and southeast Arizona were generating smoke which covered most of central and western New Mexico and eastern Arizona. There were areas of moderately dense to dense smoke and it was mainly moving to the northeast.
California: The Hathaway fire continues to burn in southern California is generating mostly light smoke plume that was moving to the northeast and reaching into extreme southern Nevada.
Nevada/Idaho: A fire in central Nevada along the Lander/Eureka county border was producing a plume of mainly light smoke that was lifting to the north and into southwest Idaho.