Yesterday we kept every window in the house closed. All day. It was over 90 degrees outside, so that meant surrendering to the AC — windows shut, machine humming, sky the color of weak tea. The Canadian wildfire smoke is back over New York, and at one point yesterday, New York ranked as the third most polluted major city in the world.
The numbers made it feel official. On my air quality app, the Hudson Valley hit an AQI of 165 — solidly in the red, "Unhealthy" zone. New York City sat around 121. The state expanded its air quality advisory to cover all of New York, and today is forecast to be worse: the city, the Lower Hudson Valley, and Long Island are all expected to reach "Unhealthy" levels, with temporary spikes possibly hitting "Very Unhealthy." The city has extended its emergency plan through Thursday.
Where all this smoke is coming from
More than 100 wildfires are burning in northwestern Ontario right now, part of over 800 active fires across Canada — many with little to no containment. The smoke rises into what forecasters call a smoke plume, a band of smoke so large it's visible from satellites, and the wind carries it across the Great Lakes and straight down into the Northeast.
If you've never decoded American air quality numbers: the AQI runs from 0 to 500. Up to 50 is good, up to 100 is moderate, 101–150 is unhealthy for sensitive groups — children, older adults, anyone with asthma or heart or lung conditions — and past 150 the "sensitive groups" part quietly drops off. It's just unhealthy. For everyone.
The part that feels strangely familiar
Here's the thing about being Korean in New York during smoke season: we've trained for this. Anyone who's lived through a Seoul spring knows the drill — fine dust season, yellow dust from the Gobi, the daily ritual of checking an air quality app before deciding whether to open a window. Masks in the drawer. Air purifier in the corner. Jinguk checked the AQI yesterday morning before I'd even had coffee, out of pure muscle memory.
I honestly thought we'd left that routine behind when we moved here. Instead, every summer now, New York gives us a season of Seoul spring — same closed windows, same purifier, same instinct. Only the source changed: instead of dust blowing east from a desert, it's smoke drifting south from a boreal forest.
What I couldn't stop thinking about yesterday was my mother, and everyone's mothers — days like this hit the elderly and the sick hardest. The official advice is the same on both sides of the Pacific: limit time outdoors, wear an N95 if you have to go out, keep windows closed, run a purifier or AC. If someone in your life is older or has breathing or heart trouble, today is a good day to check on them.
This is a routine now, and I'm not happy about it
Most people remember the photos from June 2023, when the New York sky turned full orange. That was supposed to be the freak event. Instead it turned out to be a preview — the smoke has come back almost every summer since, reliable as fireworks in July. Heat wave plus smoke means you can't open the windows and you can't turn off the AC, and that combination is quietly becoming part of what a New York summer is.
So we've made a decision on this blog: New York weather is becoming a regular beat here. Not just the disasters — the whole strange vocabulary of American weather, one season at a time, from someone actually living inside it.
If you're in the Northeast today: how bad is the sky where you are? And for anyone who's lived in both — Korean fine dust season or American smoke season, which one would you take? Tell me in the comments, and subscribe so you don't miss the next one.
Tags: Canadian wildfire smoke, New York air quality, AQI explained, air quality alert, New York weather, Korean fine dust, cross-cultural life, summer 2026



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