Trenton Air Quality in 2022
In 2022, Trenton's air quality (Trenton, NJ area) had a median daily AQI of 46 (Good) across 365 monitored days. 3 days (0.8%) reached Unhealthy for Sensitive Groups or worse, 227 were Good, and the year's peak AQI was 119 (Unhealthy for Sensitive Groups). Fine particulate matter (PM2.5) set the daily AQI on 209 of those days. The cleanest month of 2022 was September (median AQI 40, 0 days above 100) and the worst was July (median 56, 3 days above 100, peak 119).
- Good: 62.2%
- Moderate: 37.0%
- Unhealthy for Sensitive Groups: 0.8%
- Unhealthy or worse: 0.0%
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How was Trenton's air quality in 2022?
Good on a typical day: median AQI 46, with 3 days above AQI 100 out of 365 monitored — the 3rd cleanest of 7 years on record for the area.
- ✓Peak AQI in 2022: 119 (Unhealthy for Sensitive Groups).
- ✓Fine particulate matter (PM2.5) was the main pollutant on 209 days.
- ✓Cleanest month: September; worst: July.
Frequently asked questions
What was the average AQI in Trenton in 2022?▾
EPA's Air Quality System puts Trenton's (Trenton, NJ) median daily AQI for 2022 at 46, which is Good. 3 days were Unhealthy for Sensitive Groups or worse and the year's highest AQI was 119.
Which month had the worst air quality in Trenton in 2022?▾
The cleanest month of 2022 was September (median AQI 40, 0 days above 100) and the worst was July (median 56, 3 days above 100, peak 119).
Was 2022 a good or bad year for Trenton's air?▾
Among the 7 years EPA has published for the area (2019–2025), 2022 ranks 3rd cleanest by days above AQI 100. 2022's median of 46 is in line with the area's typical annual median of 45.
Trenton month by month in 2022
Trenton air quality month by month, 2022 (Trenton, NJ, EPA AQS daily AQI)
| Month | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| January | 31 | 52 | 0 | 73 | PM2.5 |
| February | 28 | 43 | 0 | 68 | PM2.5 |
| March | 31 | 43 | 0 | 66 | O3 |
| April | 30 | 43 | 0 | 58 | O3 |
| May | 31 | 44 | 0 | 74 | O3 |
| June | 30 | 51 | 0 | 93 | O3 |
| Julyworst | 31 | 56 | 3 | 119 | O3 |
| August | 31 | 48 | 0 | 93 | O3 |
| Septembercleanest | 30 | 40 | 0 | 68 | O3 |
| October | 31 | 45 | 0 | 61 | PM2.5 |
| November | 30 | 45 | 0 | 64 | PM2.5 |
| December | 31 | 41 | 0 | 76 | PM2.5 |
How 2022 compares
Among the 7 years EPA has published for the area (2019–2025), 2022 ranks 3rd cleanest by days above AQI 100.
2022's median of 46 is in line with the area's typical annual median of 45.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Trenton
The latest EPA AirNow observation puts Trenton's AQI at 50 (PM2.5). The figures above are multi-year annual statistics, not today's reading.
View current Trenton air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Trenton, NJ), 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.