Air quality in United States
Air quality in Louisiana today
Updated
Good: average US AQI 45 across 3 cities in Louisiana Worst now: Baton Rouge (45); cleanest: New Orleans (44).
Live US AQI, PM2.5 and ozone for cities across Louisiana, compared with the United States average.
- Average US AQI
- 45 Good
- United States average
- 52 619 cities
- Most polluted now
- Baton Rouge AQI 45
- Cleanest now
- New Orleans AQI 44
- Cities above 100
- 0
Air quality in Louisiana today
Right now the modelled air quality in Louisiana averages a US AQI of 45 (Good) across the 3 cities we track. By category: 3 Good (of 3).
That is 7 points cleaner than the United States average of 52, ranking 24 of 51 states from cleanest to most polluted.
Baton Rouge has the worst air at 45 (PM2.5 5.8 µg/m³), and New Orleans the cleanest at 44. No tracked city is above 100, so no group needs to change plans.
Louisiana cities by AQI (most polluted first)
| City | US AQI | Category | PM2.5 µg/m³ | PM10 µg/m³ | Ozone µg/m³ |
|---|---|---|---|---|---|
| Baton Rouge | 45 | Good | 5.8 | 7 | 81 |
| Alexandria | 45 | Good | 3 | 3 | 87 |
| New Orleans | 44 | Good | 10.8 | 13 | 83 |
What the US AQI numbers mean
| US AQI | Category | What it means |
|---|---|---|
| 0-50 | Good | Air quality is satisfactory and poses little or no risk; a good time for outdoor activity. |
| 51-100 | Moderate | Acceptable for most people. Unusually sensitive people should consider shortening long or heavy exertion outdoors. |
| 101-150 | Unhealthy for Sensitive Groups | People with heart or lung disease, older adults, children and teens should cut back on prolonged or heavy exertion outdoors. |
| 151-200 | Unhealthy | Everyone should reduce prolonged or heavy exertion outdoors; sensitive groups should avoid it and keep windows closed. |
| 201-300 | Very Unhealthy | Health alert: everyone should avoid prolonged or heavy exertion outdoors, and sensitive groups should stay indoors. |
| 301-500 | Hazardous | Emergency conditions: everyone should avoid all outdoor physical activity and stay indoors with filtered air if possible. The scale tops out at 500; heavier dust or smoke is shown as 500. |
Modelled by CAMS (Copernicus) via Open-Meteo, refreshed twice a day; read hour by hour from the forecast.
Cities in Louisiana
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Data: Open-Meteo Air Quality API, Copernicus Atmosphere Monitoring Service (CAMS).