New Orleans Air Quality in 2023
In 2023, New Orleans's air quality (New Orleans-Metairie, LA area) had a median daily AQI of 53 (Moderate) across 365 monitored days. 10 days (2.7%) reached Unhealthy for Sensitive Groups or worse, 139 were Good, and the year's peak AQI was 126 (Unhealthy for Sensitive Groups). Fine particulate matter (PM2.5) set the daily AQI on 227 of those days. The cleanest month of 2023 was December (median AQI 47, 0 days above 100) and the worst was May (median 64, 4 days above 100, peak 112).
- Good: 38.1%
- Moderate: 59.2%
- Unhealthy for Sensitive Groups: 2.7%
- Unhealthy or worse: 0.0%
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How was New Orleans's air quality in 2023?
Moderate on a typical day: median AQI 53, with 10 days above AQI 100 out of 365 monitored — the 7th cleanest of 7 years on record for the area.
- ✓Peak AQI in 2023: 126 (Unhealthy for Sensitive Groups).
- ✓Fine particulate matter (PM2.5) was the main pollutant on 227 days.
- ✓Cleanest month: December; worst: May.
Frequently asked questions
What was the average AQI in New Orleans in 2023?▾
EPA's Air Quality System puts New Orleans's (New Orleans-Metairie, LA) median daily AQI for 2023 at 53, which is Moderate. 10 days were Unhealthy for Sensitive Groups or worse and the year's highest AQI was 126.
Which month had the worst air quality in New Orleans in 2023?▾
The cleanest month of 2023 was December (median AQI 47, 0 days above 100) and the worst was May (median 64, 4 days above 100, peak 112).
Was 2023 a good or bad year for New Orleans's air?▾
Among the 7 years EPA has published for the area (2019–2025), 2023 ranks 7th cleanest by days above AQI 100 — the worst year on record here. 2023's median of 53 is above the area's typical annual median of 49.
New Orleans month by month in 2023
New Orleans air quality month by month, 2023 (New Orleans-Metairie, LA, EPA AQS daily AQI)
| Month | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| January | 31 | 48 | 1 | 126 | PM2.5 |
| February | 28 | 52 | 0 | 71 | PM2.5 |
| March | 31 | 55 | 0 | 70 | PM2.5 |
| April | 30 | 51 | 0 | 93 | O3 |
| Mayworst | 31 | 64 | 4 | 112 | O3 |
| June | 30 | 55 | 2 | 119 | PM2.5 |
| July | 31 | 57 | 0 | 90 | PM2.5 |
| August | 31 | 60 | 3 | 115 | PM2.5 |
| September | 30 | 55 | 0 | 90 | O3 |
| October | 31 | 50 | 0 | 96 | PM2.5 |
| November | 30 | 50 | 0 | 87 | PM2.5 |
| Decembercleanest | 31 | 47 | 0 | 94 | PM2.5 |
How 2023 compares
Among the 7 years EPA has published for the area (2019–2025), 2023 ranks 7th cleanest by days above AQI 100 — the worst year on record here.
2023's median of 53 is above the area's typical annual median of 49.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in New Orleans
The latest EPA AirNow observation puts New Orleans's AQI at 29 (PM2.5). The figures above are multi-year annual statistics, not today's reading.
View current New Orleans air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (New Orleans-Metairie, LA), 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.