Atlantic City Air Quality in 2025
In 2025, Atlantic City's air quality (Atlantic City-Hammonton, NJ area) had a median daily AQI of 36 (Good) across 365 monitored days. 1 day (0.3%) reached Unhealthy for Sensitive Groups or worse, 300 were Good, and the year's peak AQI was 105 (Unhealthy for Sensitive Groups). Ground-level ozone set the daily AQI on 224 of those days. The cleanest month of 2025 was October (median AQI 30, 0 days above 100) and the worst was June (median 49, 1 day above 100, peak 105).
- Good: 82.2%
- Moderate: 17.5%
- Unhealthy for Sensitive Groups: 0.3%
- Unhealthy or worse: 0.0%
Reduce Indoor Ozone in Atlantic City
Today's main pollutant in Atlantic City is ground-level ozone (AQI 31). 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 Atlantic City's air quality in 2025?
Good on a typical day: median AQI 36, with 1 day above AQI 100 out of 365 monitored — the 5th cleanest of 7 years on record for the area.
- ✓Peak AQI in 2025: 105 (Unhealthy for Sensitive Groups).
- ✓Ground-level ozone was the main pollutant on 224 days.
- ✓Cleanest month: October; worst: June.
Frequently asked questions
What was the average AQI in Atlantic City in 2025?▾
EPA's Air Quality System puts Atlantic City's (Atlantic City-Hammonton, NJ) median daily AQI for 2025 at 36, which is Good. 1 day were Unhealthy for Sensitive Groups or worse and the year's highest AQI was 105.
Which month had the worst air quality in Atlantic City in 2025?▾
The cleanest month of 2025 was October (median AQI 30, 0 days above 100) and the worst was June (median 49, 1 day above 100, peak 105).
Was 2025 a good or bad year for Atlantic City's air?▾
Among the 7 years EPA has published for the area (2019–2025), 2025 ranks 5th cleanest by days above AQI 100. 2025's median of 36 is in line with the area's typical annual median of 37.
Atlantic City month by month in 2025
Atlantic City air quality month by month, 2025 (Atlantic City-Hammonton, NJ, EPA AQS daily AQI)
| Month | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| January | 31 | 36 | 0 | 57 | O3 |
| February | 28 | 35 | 0 | 56 | O3 |
| March | 31 | 38 | 0 | 58 | O3 |
| April | 30 | 43 | 0 | 74 | O3 |
| May | 31 | 36 | 0 | 56 | O3 |
| Juneworst | 30 | 49 | 1 | 105 | PM2.5 |
| July | 31 | 49 | 0 | 99 | PM2.5 |
| August | 31 | 39 | 0 | 65 | PM2.5 |
| September | 30 | 38 | 0 | 48 | O3 |
| Octobercleanest | 31 | 30 | 0 | 45 | O3 |
| November | 30 | 32 | 0 | 56 | O3 |
| December | 31 | 31 | 0 | 62 | O3 |
How 2025 compares
Among the 7 years EPA has published for the area (2019–2025), 2025 ranks 5th cleanest by days above AQI 100.
2025's median of 36 is in line with the area's typical annual median of 37.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Atlantic City
The latest EPA AirNow observation puts Atlantic City's AQI at 31 (O3). The figures above are multi-year annual statistics, not today's reading.
View current Atlantic City air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Atlantic City-Hammonton, 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.