Air quality · New Jersey
Air quality in New Jersey
Across the 7 New Jersey ZIPs with EPA county air-quality data, the median day is Good in all 7 (median AQI 36–43). No day in those counties reached Unhealthy in 2025. This is a 2025 county annual summary, not a live reading.
Last verified 2026-09-24 · methodology
Air quality by ZIP code in New Jersey
EPA's 2025 annual summary for each ZIP's county. Median AQI is the typical day; lower is cleaner.
| ZIP | Median AQI | Good days | Unhealthy or worse |
|---|---|---|---|
| 07302Jersey CityHudson County | 41 Good | 261 of 365 | 0 |
| 07103NewarkEssex County | No data | ||
| 07666TeaneckBergen County | 40 Good | 258 of 363 | 0 |
| 08540PrincetonMercer County | 43 Good | 255 of 365 | 0 |
| 07030HobokenHudson County | 41 Good | 261 of 365 | 0 |
| 07604Hasbrouck HeightsBergen County | 40 Good | 258 of 363 | 0 |
| 08901New Brunswick (NJ)Middlesex County | 36 Good | 295 of 362 | 0 |
| 08902North BrunswickMiddlesex County | 36 Good | 295 of 362 | 0 |
County-level figures from EPA Air Quality System (AQS), annual county summary, joined to each ZIP by county. None of them is a measurement at a specific address.
What lands here
Pages show the 2025 median AQI category (Good, Moderate, Unhealthy for Sensitive Groups, Unhealthy, Very Unhealthy, Hazardous) for the ZIP's county, plus the year's max/90th-percentile AQI and day-count breakdown by category.
Source & refresh
EPA Air Quality System (AQS), annual county summary. Refreshed annual (epa aqs publication). Primary source →
New Jersey top concern
Lead service lines, coastal flood, sea-level rise
New Jersey has heavy LCRR obligations in Newark, Trenton, Camden, Paterson — Newark's 2018-2021 lead crisis triggered statewide LSL replacement requirements. Coastal AE/VE FEMA zones from Sandy Hook to Cape May face accelerating Risk Rating 2.0 premium pressure.
See New Jersey state page for the full state-level rollup across all 12 dimensions.
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