São José dos Campos vs São Sebastião: PM2.5 compared

São José dos Campos and São Sebastião, São Paulo were both measured on only 6 days over the last year, too few to compare them (it takes 30).

Right now

São José dos Campos–no readings since 8 Oct

São Sebastião#2,403on the 24-hour board of 2,702, at 15 US AQI (2.7 µg/m³)

Side by side with Taubaté (the nearest), Rio Claro (Brazil's worst on 30 days), Gujranwala (the world's worst on 30 days).

Side by side with Rio Claro (Brazil's worst on 30 days), Gujranwala (the world's worst on 30 days).

The same rules as every SmogRank figure: reference monitors first, and a day counts with 18 measured hours. How we measure.

Updated 2026-10-12 19:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.