Smoke from wildfires in Canada has poured into the United States, causing air quality to plummet and masking landscapes in a thick, brown haze.
Poor air quality has been an issue in New York since Wednesday, when the cloud of smoke descended near the ground.
Washington, DC, has mostly avoided hazardous air – until Friday, when a thick haze settled over the nation’s capital.
Chicago experienced some of the country’s worst air quality on Thursday and is still enveloped in a cloud of smoke. Here’s what it looks like compared to Wednesday.
Wildfire smoke has altered skies over Central Pennsylvania since Tuesday.
