Smoke from west coast wildfires has drifted to New York and Washington DC

Unprecedented fires have burned some 4.5m acres and smoke has made west coast air quality among the worst in the world

Smoke from wildfires in the western US has drifted as far east as New York and Washington DC, with residents there observing hazy skies and unusual sunrises.

Skies above the US capital have taken on a hazy din. New York Metro Weather predicted that murky air seen in New York City this week would become more even pronounced throughout Tuesday.