Atlantic City Air Quality in August
Across 2019–2025, Atlantic City's August air quality had a median AQI of 42 (Good) over 214 monitored days in the Atlantic City-Hammonton, NJ area. 0.0% of August days (0 of 214) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 61.7% of days. The cleanest August on record here was 2020 (median AQI 39, 0 days above 100) and the worst was 2024 (median 51, 0 days above 100, peak AQI 66).
- Good: 65.9%
- Moderate: 34.1%
- 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 August?
Good on a typical day: median AQI 42 across 2019–2025, with 0.0% of August days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓65.9% of August days were Good (AQI 0–50), 34.1% Moderate (51–100).
- ✓0 days of 214 reached AQI 101+; the August peak was 84.
- ✓Best August: 2020; worst August: 2024.
Frequently asked questions
What is the air quality like in Atlantic City in August?▾
Across 2019–2025, the median daily AQI in Atlantic City in August was 42 (Good). 65.9% of days were Good, 34.1% Moderate, and 0.0% reached Unhealthy for Sensitive Groups or worse, based on 214 monitored days in EPA's Air Quality System.
Is August a good time for outdoor exercise in Atlantic City?▾
A typical August day in Atlantic City sits in the Good range (median AQI 42), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of August days reached AQI 101+ in 2019–2025.
Which pollutant causes Atlantic City's August air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 61.7% of August days in Atlantic City. The highest August AQI recorded in 2019–2025 was 84 (Moderate), in 2024.
Atlantic City August air quality, year by year
Atlantic City August 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 | 43 | 0 | 84 | PM2.5 |
| 2020cleanest | 28 | 39 | 0 | 58 | PM2.5 |
| 2021 | 31 | 41 | 0 | 79 | PM2.5 |
| 2022 | 31 | 40 | 0 | 58 | PM2.5 |
| 2023 | 31 | 47 | 0 | 69 | PM2.5 |
| 2024worst | 31 | 51 | 0 | 66 | PM2.5 |
| 2025 | 31 | 39 | 0 | 65 | PM2.5 |
What August air means in Atlantic City
A typical August day in Atlantic City sits in the Good range (median AQI 42), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of August days reached AQI 101+ in 2019–2025.
August's median AQI of 42 is above Atlantic City's whole-year median of 37, making it one of the area's dirtier periods. Nationally, the median August AQI across every EPA metro area (104,152 metro-days, 2019–2025) is 45, so Atlantic City runs in line with the national August norm; 0.0% of its August days topped AQI 100 versus 3.5% nationally (below average).
August is part of Atlantic City's summer season (June, July, August); the summer 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.