From Gothamist:
Wondering when the city’s latest visitor will finally pack its bags and clear out?
Things are starting to look up, as of Friday morning.
Air quality began to improve on Thursday evening and into Friday. And the low pressure system that has been stuck off the coast of Maine, funneling Canada's wildfire smoke southward, has started to move west— directing that smoky air to Ohio, Virginia and West Virginia.
As of 6 a.m. Friday, air quality was moderate throughout the five boroughs and North Jersey.