Atlantic City Air Quality in May
Across 2019–2025, Atlantic City's May air quality had a median AQI of 38 (Good) over 216 monitored days in the Atlantic City-Hammonton, NJ area. 0.0% of May days (0 of 216) reached Unhealthy for Sensitive Groups or worse, and ground-level ozone set the daily AQI on 66.7% of days. The cleanest May on record here was 2024 (median AQI 33, 0 days above 100) and the worst was 2022 (median 42, 0 days above 100, peak AQI 71).
- Good: 83.3%
- Moderate: 16.7%
- 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 May?
Good on a typical day: median AQI 38 across 2019–2025, with 0.0% of May days above AQI 100. Ground-level ozone is the main driver.
- ✓83.3% of May days were Good (AQI 0–50), 16.7% Moderate (51–100).
- ✓0 days of 216 reached AQI 101+; the May peak was 93.
- ✓Best May: 2024; worst May: 2022.
Frequently asked questions
What is the air quality like in Atlantic City in May?▾
Across 2019–2025, the median daily AQI in Atlantic City in May was 38 (Good). 83.3% of days were Good, 16.7% Moderate, and 0.0% reached Unhealthy for Sensitive Groups or worse, based on 216 monitored days in EPA's Air Quality System.
Is May a good time for outdoor exercise in Atlantic City?▾
A typical May day in Atlantic City sits in the Good range (median AQI 38), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of May days reached AQI 101+ in 2019–2025.
Which pollutant causes Atlantic City's May air quality problems?▾
Ground-level ozone set the daily AQI on 66.7% of May days in Atlantic City. The highest May AQI recorded in 2019–2025 was 93 (Moderate), in 2022.
Atlantic City May air quality, year by year
Atlantic City May 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 | 42 | 0 | 58 | O3 |
| 2020 | 30 | 37 | 0 | 52 | O3 |
| 2021 | 31 | 42 | 0 | 93 | O3 |
| 2022worst | 31 | 42 | 0 | 71 | O3 |
| 2023 | 31 | 37 | 0 | 63 | O3 |
| 2024cleanest | 31 | 33 | 0 | 58 | O3 |
| 2025 | 31 | 36 | 0 | 56 | O3 |
What May air means in Atlantic City
A typical May day in Atlantic City sits in the Good range (median AQI 38), so running, cycling and children's outdoor play are fine for everyone on most days; fewer than 1% of May days reached AQI 101+ in 2019–2025.
May's median AQI of 38 is in line with Atlantic City's whole-year median of 37, so this period is neither a clean nor a dirty stretch for the area. Nationally, the median May AQI across every EPA metro area (104,064 metro-days, 2019–2025) is 44, so Atlantic City runs below the national May norm; 0.0% of its May days topped AQI 100 versus 1.3% nationally (below average).
May is part of Atlantic City's spring season (March, April, May); the spring 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.