More Canadian wildfire smoke shrouds US midwest, mid-Atlantic and north-east The Guardian Wildfire Smoke Maps and Live Updates: Air Quality at Dangerous Levels in U.S. and Canada The New York Times Before and after images: Wildfire smoke casts skylines in dystopian haze CNN Live updates as air quality worsens across Philadelphia region due to wildfire smoke 6abc Philadelphia DEP Declares Statewide Code Purple Air Quality Alert for Friday, July 17, 2026 Commonwealth of Pennsylvania (.gov)
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