Atlantic City Air Quality in Summer
Across 2019–2025, Atlantic City's summer (June–August) air quality had a median AQI of 45 (Good) over 638 monitored days in the Atlantic City-Hammonton, NJ area. 1.3% of summer days (8 of 638) reached Unhealthy for Sensitive Groups or worse, and fine particulate matter (PM2.5) set the daily AQI on 61.1% of days. The cleanest summer on record here was 2021 (median AQI 43, 0 days above 100) and the worst was 2023 (median 53, 5 days above 100, peak AQI 265).
- Good: 60.5%
- Moderate: 38.2%
- Unhealthy for Sensitive Groups: 0.8%
- Unhealthy or worse: 0.5%
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 summer?
Good on a typical day: median AQI 45 across 2019–2025, with 1.3% of summer days above AQI 100. Fine particulate matter (PM2.5) is the main driver.
- ✓60.5% of summer days were Good (AQI 0–50), 38.2% Moderate (51–100).
- ✓8 days of 638 reached AQI 101+; the summer peak was 265.
- ✓Cleanest month: August; worst month: June.
Frequently asked questions
What is the air quality like in Atlantic City in summer?▾
Across 2019–2025, the median daily AQI in Atlantic City in summer was 45 (Good). 60.5% of days were Good, 38.2% Moderate, and 1.3% reached Unhealthy for Sensitive Groups or worse, based on 638 monitored days in EPA's Air Quality System.
Is summer a good time for outdoor exercise in Atlantic City?▾
A typical summer day in Atlantic City sits in the Good range (median AQI 45), so running, cycling and children's outdoor play are fine for everyone on most days; about 1 day in 77 of summer days (1.3%) reached AQI 101+ in 2019–2025.
Which pollutant causes Atlantic City's summer air quality problems?▾
Fine particulate matter (PM2.5) set the daily AQI on 61.1% of summer days in Atlantic City. The highest summer AQI recorded in 2019–2025 was 265 (Very Unhealthy), in 2023.
Atlantic City summer air quality, year by year
Atlantic City summer 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 | 92 | 48 | 1 | 105 | PM2.5 |
| 2020 | 87 | 44 | 0 | 90 | PM2.5 |
| 2021cleanest | 91 | 43 | 0 | 96 | PM2.5 |
| 2022 | 92 | 43 | 1 | 185 | PM2.5 |
| 2023worst | 92 | 53 | 5 | 265 | PM2.5 |
| 2024 | 92 | 44 | 0 | 72 | PM2.5 |
| 2025 | 92 | 47 | 1 | 105 | PM2.5 |
What summer air means in Atlantic City
A typical summer day in Atlantic City sits in the Good range (median AQI 45), so running, cycling and children's outdoor play are fine for everyone on most days; about 1 day in 77 of summer days (1.3%) reached AQI 101+ in 2019–2025.
Summer's median AQI of 45 is above Atlantic City's whole-year median of 37, making it one of the area's dirtier periods. Nationally, the median Summer AQI across every EPA metro area (308,645 metro-days, 2019–2025) is 46, so Atlantic City runs in line with the national Summer norm; 1.3% of its Summer days topped AQI 100 versus 3.6% nationally (below average).
Within the season, August is the cleanest month (median AQI 42, 0.0% of days above 100) and June the worst (median 44, 3.8% above 100).
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 season 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.