What is the air quality in São Caetano do Sul?

São Caetano do Sul, Brazil has an annual US AQI of 64 (Polluted) and average PM2.5 of 15.7 µg/m³, ranking #2589 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in São Caetano do Sul?

December is typically the cleanest month (AQI 57) and July the most polluted (AQI 73).

Where does São Caetano do Sul's air quality data come from?

PM2.5: 1998–2024 (monitors 2021–2023, satellite 1998–2024). Measured by government monitoring stations. Full sources are on the methodology page.

São Caetano do Sul, Brazil — Air Quality & Clean City Guide 2026

São Caetano do Sul Air Quality Data

Global rank	City	Continent	AQI	PM2.5
2589	São Caetano do Sul, Brazil	South America	AQI 64	PM2.5 15.7 µg/m³