
According to July 21 NY Times article:
Wildfire smoke from Canada and the Western United States stretched across the
continent this week, covering skies in a thick haze and triggering health
alerts from Toronto to Philadelphia. Air quality remained in the unhealthy
range across much of the East Coast on Wednesday morning as the haze pushed
southward….
… As the smoke moved eastward across Toronto, New York and Philadelphia on Tuesday, concentrations of dangerous microscopic air pollution known as PM2.5 (because the particles are less than 2.5 microns in diameter) reached highs in the “unhealthy” range for most of the day….
Was seen from Roosevelt Island too
https://t.co/JmXcR8gIfs— Roosevelt Islander (@Rooseveltisland)
July 21, 2021
The Roosevelt Island sky looked like this from the wildfire smoke yesterday.
View from my friend’s place on Roosevelt Island, NYC, on a normal day and on
a freaky wildfire-from-the-West day.
#haze
#ClimateCrisis
pic.twitter.com/1olz9YIcIM— Ariel Alexovich (@missariel)
July 21, 2021
And rest of New York City.