What is the air quality in Santa Maria da Feira?

Santa Maria da Feira, Portugal has an annual US AQI of 53 (Reasonable) and average PM2.5 of 11 µg/m³, ranking #1080 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Santa Maria da Feira?

May is typically the cleanest month (AQI 49) and January the most polluted (AQI 61).

Where does Santa Maria da Feira's air quality data come from?

PM2.5: 1998–2024 (satellite). From satellite data, because no government monitor covers the city. Full sources are on the methodology page.

Santa Maria da Feira, Portugal — Air Quality & Clean City Guide 2026

Santa Maria da Feira Air Quality Data

Global rank	City	Continent	AQI	PM2.5
1080	Santa Maria da Feira, Portugal	Europe	AQI 53	PM2.5 11 µg/m³