Jersey City Air Quality in 2023
In 2023, Jersey City's air quality (New York-Newark-Jersey City, NY-NJ-PA area) had a median daily AQI of 56 (Moderate) across 365 monitored days. 24 days (6.6%) reached Unhealthy for Sensitive Groups or worse, 107 were Good, and the year's peak AQI was 278 (Very Unhealthy). Fine particulate matter (PM2.5) set the daily AQI on 249 of those days. The cleanest month of 2023 was October (median AQI 52, 0 days above 100) and the worst was July (median 88, 11 days above 100, peak 165).
- Good: 29.3%
- Moderate: 64.1%
- Unhealthy for Sensitive Groups: 4.7%
- Unhealthy or worse: 1.9%
Reduce Indoor Ozone in Jersey City
Today's main pollutant in Jersey City is ground-level ozone (AQI 44). Important: standard HEPA filters do NOT remove ozone — only a purifier with a substantial activated-carbon bed adsorbs it. The biggest wins are cutting indoor sources (gas appliances, certain "ionizer" purifiers) and ventilating when outdoor ozone is low (early morning). A high-carbon unit helps with the gases and VOCs that linger indoors.
Recommended: Levoit Core 300 — True HEPA + activated carbon · CADR ~141 CFM · rooms up to 219 sq ft
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How was Jersey City's air quality in 2023?
Moderate on a typical day: median AQI 56, with 24 days above AQI 100 out of 365 monitored — the 6th cleanest of 7 years on record for the area.
- ✓Peak AQI in 2023: 278 (Very Unhealthy).
- ✓Fine particulate matter (PM2.5) was the main pollutant on 249 days.
- ✓Cleanest month: October; worst: July.
Frequently asked questions
What was the average AQI in Jersey City in 2023?▾
EPA's Air Quality System puts Jersey City's (New York-Newark-Jersey City, NY-NJ-PA) median daily AQI for 2023 at 56, which is Moderate. 24 days were Unhealthy for Sensitive Groups or worse and the year's highest AQI was 278.
Which month had the worst air quality in Jersey City in 2023?▾
The cleanest month of 2023 was October (median AQI 52, 0 days above 100) and the worst was July (median 88, 11 days above 100, peak 165).
Was 2023 a good or bad year for Jersey City's air?▾
Among the 7 years EPA has published for the area (2019–2025), 2023 ranks 6th cleanest by days above AQI 100. 2023's median of 56 is in line with the area's typical annual median of 54.
Jersey City month by month in 2023
Jersey City air quality month by month, 2023 (New York-Newark-Jersey City, NY-NJ-PA, EPA AQS daily AQI)
| Month | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| January | 31 | 55 | 0 | 78 | PM2.5 |
| February | 28 | 56 | 0 | 77 | PM2.5 |
| March | 31 | 53 | 0 | 73 | PM2.5 |
| April | 30 | 54 | 2 | 140 | O3 |
| May | 31 | 60 | 1 | 105 | O3 |
| June | 30 | 68 | 8 | 278 | PM2.5 |
| Julyworst | 31 | 88 | 11 | 165 | O3 |
| August | 31 | 54 | 0 | 100 | O3 |
| September | 30 | 52 | 2 | 140 | PM2.5 |
| Octobercleanest | 31 | 52 | 0 | 74 | PM2.5 |
| November | 30 | 53 | 0 | 72 | PM2.5 |
| December | 31 | 57 | 0 | 91 | PM2.5 |
How 2023 compares
Among the 7 years EPA has published for the area (2019–2025), 2023 ranks 6th cleanest by days above AQI 100.
2023's median of 56 is in line with the area's typical annual median of 54.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Jersey City
The latest EPA AirNow observation puts Jersey City's AQI at 44 (O3). The figures above are multi-year annual statistics, not today's reading.
View current Jersey City air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (New York-Newark-Jersey City, NY-NJ-PA), 2019–2025. Daily AQI per CBSA is the highest AQI reported by any monitor in the area that day; the defining parameter is the pollutant that set it. Month and season statistics pool every such day in the period across all years listed. Retrieved 2026-09-09.