Seattle, Portland have world’s worst air quality again Thursday. When is rain expected? KOMO NewsAir quality in Seattle ranked as one of the worst in the world | FOX 13 Seattle FOX 13 SeattleThis October smoke could be the latest on record KXLY SpokaneSeattle air quality among worst in world The Seattle TimesWestern Washington smoke: Unhealthy to hazardous air hangs over region KIRO SeattleView Full Coverage on Google News