What is the air quality in Lisbon?

Lisbon, Portugal has an annual US AQI of 54 (Reasonable) and average PM2.5 of 11.6 µg/m³, ranking #1242 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Lisbon?

April is typically the cleanest month (AQI 51) and January the most polluted (AQI 61).

Where does Lisbon's air quality data come from?

PM2.5: 1998–2026 (monitors 2004–2026, satellite 1998–2003, 2010, 2013, 2020; 2026 provisional). Measured by government monitoring stations. Full sources are on the methodology page.

Lisbon, Portugal — Air Quality & Clean City Guide 2026

Lisbon Air Quality Data

Global rank	City	Continent	AQI	PM2.5
1242	Lisbon, Portugal	Europe	AQI 54	PM2.5 11.6 µg/m³