NOAA Hazard Mapping System Fire and Smoke Product reported the presence of very light density dust. Dust was lifted into atmosphere in response to a rear descending jet behind the upper low over New Mexico and western Texas. AOD from MODIS Aqua shows high values over New Mexico. Optical column size distribution retrieved from AERONET White Sands_HELSTF sun photometer how the presence of coarse particulate (radius in the range of 1-10 microns) aloft.
EPA's Airnow animation shows Moderate PM2.5 AQI levels along the eastern half of the US. Surface inversion limited mixing and contribute to rising particle concentrations.Code Orange AQI levels were reported in Idaho. Tropospheric NO2 retrievals (courtesy OMI KNMI) show high concentrations over California, Illinois, Ohio and the New England region.