What is the air quality in São Tomé?

São Tomé, São Tomé and Príncipe has an annual US AQI of 53 (Reasonable) and average PM2.5 of 11.8 µg/m³, ranking #1147 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in São Tomé?

November is typically the cleanest month (AQI 36) and July the most polluted (AQI 67).

Where does São Tomé'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.

São Tomé, São Tomé and Príncipe — Air Quality & Clean City Guide 2026

São Tomé Air Quality Data

Global rank	City	Continent	AQI	PM2.5
1147	São Tomé, São Tomé and Príncipe	Africa & Middle East	AQI 53	PM2.5 11.8 µg/m³