SmogRank / World / North America / United States / New Jersey
Most polluted cities in New Jersey, United States
19 measured cities, last 30 days; 0 above the WHO 24-hour guideline. Worst: Palmyra at 6.9 µg/m³, #1,360 in the world.
About 0 people in these 2 cities breathed unhealthy air on an average day over the last 30 days.
Ranked by people: each city's population times its share of unhealthy days, those with a daily mean over 35.4 µg/m³ (US AQI 101+). That is how many people living there breathed unhealthy air on an average day. Only cities measured at 2 or more places at least 3 km apart are ranked: one monitor shouldn't speak for a whole city. Population is the city itself, not its wider metro area.
- 1Jersey City 0
- 2Fort Lee 0
The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales
Estimated: cities without a monitor
New Jersey cities we can't measure, with model estimates for the last 7 days. Listed by population, not ranked: estimates aren't precise enough to rank. Model estimates from the Copernicus Atmosphere Monitoring Service (CAMS), adjusted to measured cities nearby where there are any. Adjusted, a single day lands within ×1.5 of what a monitor would read about two times in three; unadjusted, it can be off by half or double. Treat them as a guide, not a measurement.
| City | 7-day estimate |
|---|---|
| Edison | ≈ 5 µg/m³ |
| Clifton | ≈ 7 µg/m³ |
| Brick | ≈ 5 µg/m³ |
| Passaic | ≈ 7 µg/m³ |
| Cherry Hill | ≈ 8 µg/m³ |
| Union City | ≈ 7 µg/m³ |
| Middletown | ≈ 6 µg/m³ |
| East Orange | ≈ 5 µg/m³ |
| North Bergen | ≈ 7 µg/m³ |
| Irvington | ≈ 5 µg/m³ |
| Vineland | ≈ 6 µg/m³ |
| Wayne | ≈ 5 µg/m³ |
| Union | ≈ 5 µg/m³ |
| Piscataway | ≈ 5 µg/m³ |
| Jackson | ≈ 5 µg/m³ |
| Lakewood | ≈ 5 µg/m³ |
| Hoboken | ≈ 7 µg/m³ |
| West New York | ≈ 7 µg/m³ |
| Perth Amboy | ≈ 5 µg/m³ |
| Plainfield | ≈ 5 µg/m³ |
| Parsippany | ≈ 5 µg/m³ |
| Bloomfield | ≈ 7 µg/m³ |
| East Brunswick | ≈ 7 µg/m³ |
| West Orange | ≈ 5 µg/m³ |
| Sayreville | ≈ 5 µg/m³ |
| Hackensack | ≈ 7 µg/m³ |
| Bridgewater | ≈ 4 µg/m³ |
| North Brunswick | ≈ 6 µg/m³ |
| Sicklerville | ≈ 5 µg/m³ |
| Sayreville Junction | ≈ 5 µg/m³ |
| Kearny | ≈ 7 µg/m³ |
| Mount Laurel | ≈ 7 µg/m³ |
| Marlboro | ≈ 6 µg/m³ |
| Teaneck | ≈ 7 µg/m³ |
| Montclair | ≈ 5 µg/m³ |
| Hillsborough | ≈ 5 µg/m³ |
| Sewell | ≈ 6 µg/m³ |
| Belleville | ≈ 7 µg/m³ |
| Orange | ≈ 5 µg/m³ |
| Fair Lawn | ≈ 7 µg/m³ |
Bad-air episodes in New Jersey
- Northern United States and Canada, July 202614 to 21 July 2026, 8 days327 cities548 µg/m³peak, Superior
- North-eastern United States, June and July 202630 June to 2 July 2026, 3 days38 cities32 µg/m³peak, Westerville
- North-eastern United States and Canada, 14 to 19 February 20266 days108 cities54 µg/m³peak, Lancaster
- North-eastern United States, January 202618 January 2026, 1 day16 cities37 µg/m³peak, New Holland
- North-eastern United States and Canada around Nepean, 6 January 20261 day16 cities34 µg/m³peak, Camden
- Pennsylvania and New Jersey, United States, November 202521 November 2025, 1 day14 cities42 µg/m³peak, York
Times when many cities around here had PM2.5 at twice their usual or more on the same days.
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SmogRank, most polluted cities in New Jersey, United States, PM2.5, last 30 days to 6 Oct 2026, 22:00 UTC, smogrank.com/us/region/new-jersey?w=30d.
You're welcome to reuse a single chart, image or figure with this citation and a link. Terms. Raw monitor readings in bulk are published by OpenAQ, under each provider's licence.
Updated 2026-10-06 22:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.