LatestNOAA’s smoke narratives describe widespread heavy- to light-density smoke from wildfires in the Northwest Territories and the Pacific Northwest, with plumes spreading across Canada and into the CONUS and even offshore, alongside a Timber Fire in Monterey County contributing localized smoke. The reports consistently note a large regional layer of smoke over central and eastern North America and a diffuse light-density layer spanning much of the region, merging with smog from Mexico and the Caribbean.Aug 23, 2026