Air quality by country
Air quality in Portugal today
Updated
Good: average US AQI 36 across 8 cities Worst now: Porto (43); cleanest: Queluz (31).
Live US AQI, PM2.5 and ozone for cities across Portugal, ranked from most polluted to cleanest.
- Average US AQI
- 36 Good
- Most polluted now
- Porto AQI 43
- Cleanest now
- Queluz AQI 31
- Cities above 100
- 0 unhealthy for sensitive groups or worse
Air quality in Portugal today
Right now the modelled air quality in Portugal averages a US AQI of 36 (Good) across the 8 cities we track. By category: 8 Good (of 8).
That is 29 points better than the worldwide average of 65 across 3,909 cities.
Porto has the worst air at 43 with PM2.5 at 7 µg/m³, while Queluz is cleanest at 31. No tracked city is above 100, the level where sensitive groups are advised to cut back outdoors.
Portugal cities by AQI (most polluted first)
| City | Region | US AQI | Category | PM2.5 µg/m³ | Ozone µg/m³ |
|---|---|---|---|---|---|
| Porto | Porto | 43 | Good | 7 | 49 |
| Funchal | Madeira | 42 | Good | 5.1 | 87 |
| Faro | Faro | 37 | Good | 4.4 | 60 |
| Lagos, Faro | Faro | 37 | Good | 4.6 | 83 |
| Quarteira | Faro | 37 | Good | 4.4 | 60 |
| Lisbon | Lisbon | 31 | Good | 4.7 | 58 |
| Amadora | Lisbon | 31 | Good | 4.7 | 58 |
| Queluz | Lisbon | 31 | Good | 4.7 | 58 |
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.
More
Data: Open-Meteo Air Quality API, Copernicus Atmosphere Monitoring Service (CAMS).