U.S. Air Quality

Moderate to Unhealthy for Sensitive Groups AQI continues

Moderate (Code Yellow) and Unhealthy for Sensitive Groups (Code Orange) PM2.5AQI were observed again today across the Great Lakes, Southeast, Southern Plains, and Southwest states (top left, courtesy AIRNow). The HMS reports an extensive region of remnant smoke from the wildfires in Colorado and New Mexico affecting the central par of the US and new areas of light to moderately dense smoke situated just off the mid-atlantic coast (top right). Today's MODIS AOD image overlaid with RGB from the Terra satellite also indicates elevated AOD near the Colorado High Park fire as well as over portions of Oklahoma/ Kansas and the Great Lake states (bottom left). Elsewhere, raised levels of ozone continue to be a problem for the southern California valleys, Rocky Mountain, and Great Lake states as Moderate to Unhealthy for Sensitive Groups levels were reached (bottom right).