Atlantic City Air Quality in October
Across 2019–2025, Atlantic City's October air quality had a median AQI of 33 (Good) over 216 monitored days in the Atlantic City-Hammonton, NJ area. 0.0% of October days (0 of 216) reached Unhealthy for Sensitive Groups or worse, and ground-level ozone set the daily AQI on 62.0% of days. The cleanest October on record here was 2022 (median AQI 29, 0 days above 100) and the worst was 2024 (median 38, 0 days above 100, peak AQI 97).
- Good: 90.3%
- Moderate: 9.7%
- Unhealthy for Sensitive Groups: 0.0%
- 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 is the air in Atlantic City in October?
Good on a typical day: median AQI 33 across 2019–2025, with 0.0% of October days above AQI 100. Ground-level ozone is the main driver.
- ✓90.3% of October days were Good (AQI 0–50), 9.7% Moderate (51–100).
- ✓0 days of 216 reached AQI 101+; the October peak was 97.
- ✓Best October: 2022; worst October: 2024.
Frequently asked questions
What is the air quality like in Atlantic City in October?▾
Across 2019–2025, the median daily AQI in Atlantic City in October was 33 (Good). 90.3% of days were Good, 9.7% Moderate, and 0.0% reached Unhealthy for Sensitive Groups or worse, based on 216 monitored days in EPA's Air Quality System.
Is October a good time for outdoor exercise in Atlantic City?▾
A typical October day in Atlantic City sits in the Good range (median AQI 33), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of October days reached AQI 101+ in 2019–2025.
Which pollutant causes Atlantic City's October air quality problems?▾
Ground-level ozone set the daily AQI on 62.0% of October days in Atlantic City. The highest October AQI recorded in 2019–2025 was 97 (Moderate), in 2024.
Atlantic City October air quality, year by year
Atlantic City October air quality by year (Atlantic City-Hammonton, NJ, EPA AQS daily AQI)
| Year | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| 2019 | 31 | 32 | 0 | 55 | O3 |
| 2020 | 31 | 34 | 0 | 53 | PM2.5 |
| 2021 | 30 | 34 | 0 | 62 | O3 |
| 2022cleanest | 31 | 29 | 0 | 49 | O3 |
| 2023 | 31 | 32 | 0 | 64 | PM2.5 |
| 2024worst | 31 | 38 | 0 | 97 | O3 |
| 2025 | 31 | 30 | 0 | 45 | O3 |
What October air means in Atlantic City
A typical October day in Atlantic City sits in the Good range (median AQI 33), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of October days reached AQI 101+ in 2019–2025.
October's median AQI of 33 is below Atlantic City's whole-year median of 37, making it one of the area's cleaner periods. Nationally, the median October AQI across every EPA metro area (102,872 metro-days, 2019–2025) is 38, so Atlantic City runs below the national October norm; 0.0% of its October days topped AQI 100 versus 1.3% nationally (below average).
October is part of Atlantic City's fall season (September, October, November); the fall page pools all three months.
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 month 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.