Air Quality in Jersey City, New Jersey — Live
Live readings from PurpleAir sensors across Jersey City — with free alerts the moment smoke drifts in.
AQI 32 from 4 PurpleAir sensors · Holding steady · data from PurpleAir
As of , the air quality in Jersey City, New Jersey is AQI 32 — Good and holding steady — with PM2.5 at 5.8 µg/m³, the median of 4 live PurpleAir sensors reading 24 to 33. Canairy's verdict: Breathe easy.
For scale, that PM2.5 reading is below the World Health Organization's 24-hour guideline of 15 µg/m³. The WHO figure is a daily average and this is a live reading, so read it as a sense of magnitude rather than a formal exceedance — a brief spike and a bad day are not the same thing. More on the WHO guidelines
Pollen today in Jersey City: grass pollen is the strongest of the three at a moderate level, from Google's pollen forecast. Canairy shows the tree, grass and weed forecast beside the air reading on every plan, including the free one.
Free to download · Live data from PurpleAir & public monitors
Live PurpleAir sensor map for Jersey City and Hoboken, Bayonne, Union City, Newark. Every dot is a real sensor, color-coded by current air quality.
Sensor by sensor in Jersey City
The sensors Canairy reads in Jersey City agree right now — all 4 sit in the Good band, a 9-point spread — so the city-wide number is a fair description of the whole area today.
| From city center | AQI | Category |
|---|---|---|
| 1.3 mi N | 24 | Good |
| 2.5 mi ENE | 29 | Good |
| 3.5 mi SE | 33 | Good |
| 4.3 mi NE | 32 | Good |
Jersey City's air is shaped less by any single smokestack than by sheer density and traffic: it is New Jersey's second-largest city, packed at nearly 20,000 people per square mile, wedged between the Holland Tunnel, the Turnpike approaches, and the working port on Newark Bay. Most days the air here reads Good to Moderate, but the fine-particle load still runs above what health agencies consider ideal, and the summer brings ozone that drifts in on the same NYC-metro airshed the whole region shares.
What Canairy does for Jersey City
A clear verdict
Not just a number — a plain-English call for Jersey City: open the windows, or keep them shut.
Smoke alerts
A push or text the moment the air crosses your threshold — and again when it clears.
A heads-up before it's bad
Trend alerts catch the air turning, so you can close up the house before the smoke settles in.
Every place you care about
Home, work, the kids' school — across Jersey City or across the country, on one screen.
What the air in Jersey City is doing next
| When | AQI | Expected air quality | Main pollutant |
|---|---|---|---|
| Today | 45 | Good | ozone |
| Tomorrow | 45 | Good | ozone |
| Monday | 40 | Good | ozone |
| Tuesday | 50 | Good | ozone |
9/4 - A stalled frontal boundary in the northeast will result in the chance for scattered showers and thunderstorms in the afternoon, along with light northwesterly winds and warm temperatures. Ozone levels drop to the good range as a result, while fine particulates are expected to remain along the good/moderate threshold statewide. 9/5 - Canadian high pressure will build into the region on Saturday, with northerly winds, lower humidity, and seasonable temperatures anticipated. As a result, air quality will return to the good category across New Jersey. 9/6 - A pleasant day is forecast for Sunday with northeasterly winds, temperatures slightly below normal, and mostly sunny skies expected. Therefore, air quality will remain the good category throughout the state. 9/7 - High pressure will remain in control on Monday, with cooler temperatures and dry conditions forecast. Air quality will remain in the good category statewide. 9/8 - Light westerly winds and mostly sunny skies are forecast for Tuesday as a cold front approaches the region. Air quality is forecast to remain in the good category statewide.
Forecast from EPA AirNow for the Northeast Urban reporting area. Canairy watches the live sensors against it and tells you when the air actually crosses your threshold, rather than leaving you to check.
The June 2023 smoke that turned the skyline orange
In early June 2023, smoke from Quebec's wildfires poured down over the New York metro area, and Jersey City sat right in the path. Across the river and up and down the Turnpike corridor, the Air Quality Index blew past 400 at monitors like Princeton Junction on June 7 and 8, and New York City recorded its worst air quality since the 1966 smog. Roughly 128 million Americans were under air quality alerts, and schools across New Jersey closed or moved recess indoors.
For a city that rarely thinks of itself as wildfire country, it was a hard lesson: the smoke that matters most to Jersey City doesn't start in Jersey City. Fires hundreds of miles north can erase the difference between here and the cleanest suburb in a single afternoon, which is exactly when knowing the real number closest to you is worth the most.
Density, tunnels, and the port
Jersey City is bounded by the Hudson River and Upper New York Bay on one side and the Hackensack River and Newark Bay on the other, with the Holland Tunnel funneling Manhattan-bound traffic through its eastern edge and Port Jersey, a container terminal for the Port of New York and New Jersey, working its southern waterfront. All of that traffic and freight leaves a signature in the air: nitrogen dioxide, a marker of vehicle and diesel exhaust, runs elevated here, and the city's year-round fine-particle level typically sits around 1.7 times the World Health Organization's annual guideline.
That is why readings can differ block to block. Air near the tunnel approaches, the Turnpike ramps, or a truck route can sit noticeably higher than a reading a few streets inland in a park-lined neighborhood. The New Jersey Department of Environmental Protection runs official monitors in the area, but a government station miles away can't tell you what the air is doing on your own corner, which is where a dense sensor map earns its keep.
Summer ozone on a shared airshed
Jersey City's other recurring problem doesn't look like smoke at all. Ground-level ozone forms when nitrogen oxides and volatile organic compounds from vehicle exhaust cook in summer sunlight and heat, and the New York-New Jersey metro produces those ingredients in bulk. On hot, stagnant days the whole airshed, Jersey City included, can tip into unhealthy ozone territory even when the sky looks perfectly clear.
Because winds carry the precursors, ozone isn't only a downtown problem, and it isn't only Jersey City's doing; the same pollution drifts across the region and settles wherever the sun keeps working on it. Ozone is hardest on kids, older adults, and anyone with asthma, and unlike smoke it gives no visual warning, so a live reading is often the only heads-up you'll get before a bad-air afternoon.
Jersey City air quality FAQ
What is the air quality in Jersey City right now?
As of September 5, 2026 at 8:10 AM EDT, the air quality in Jersey City, New Jersey is AQI 32 — Good — with PM2.5 at 5.8 µg/m³, the median of 4 live PurpleAir sensors. Open the windows. Great for outdoor activity.
Why was Jersey City's air so bad in June 2023?
Smoke from Canadian wildfires in Quebec settled over the entire New York metro area in early June 2023. Along the Turnpike corridor near Jersey City the Air Quality Index climbed past 400, New York City logged its worst air since the 1966 smog, and schools across New Jersey closed as roughly 128 million Americans came under air quality alerts. The smoke came from hundreds of miles away, which is why local conditions can change fast even with no fire nearby.
Does traffic and the port affect Jersey City's air?
Yes. Jersey City is one of the densest cities in the country, with the Holland Tunnel, Turnpike approaches, and Port Jersey's container terminal all concentrating vehicle and diesel exhaust. That shows up as elevated nitrogen dioxide and a year-round fine-particle level running above health guidelines, and it means readings near tunnel ramps and truck routes can sit higher than a park-lined block a few streets inland.
What the AQI numbers mean
| AQI | Category | What it means for you |
|---|---|---|
| 0–50 | Good | Open the windows. Great for outdoor activity. |
| 51–100 | Moderate | Sensitive groups may want to take it slower outside. |
| 101–150 | Unhealthy for Sensitive Groups | Kids, elderly, and respiratory conditions stay closer to home. |
| 151–200 | Unhealthy | Skip outdoor exercise. Close windows. |
| 201–300 | Very Unhealthy | Limit time outside. N95 if you must go. |
| 301+ | Hazardous | Health emergency. Stay inside, run filtration if you have it. |
Canairy lets you tighten these bands if you’re more sensitive than the EPA default, so an alert can fire before the official category changes. How to read the Air Quality Index
Where these readings come from
The AQI at the top of this page is the median of the 4 curated PurpleAir sensors Canairy tracks in and around Jersey City, with outliers set aside so that one sensor brought indoors — or parked beside a barbecue — cannot set the number for a whole city. Every sensor behind it is listed above with its distance and bearing from the city center. There is no black box here.
In the app, a place you save resolves the same way first. When no neighborhood sensor is reporting it falls back to the nearest EPA AirNow monitor, and anything modeled rather than measured is labelled a regional estimate rather than passed off as a sensor reading. How low-cost sensors compare to regulatory monitors
About Canairy
Canairy is free to download. The free plan covers one saved place with live readings, a plain-English verdict, and push alerts when the air crosses a threshold you choose. Paid plans add more places, faster refreshes, and SMS alerts. It is built by two parents in Sonoma County, California, who got tired of guessing whether it was safe to send the kids outside. Why we built it
Go deeper
Air quality near Jersey City
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