São Sebastião vs Gujranwala: PM2.5 compared

São Sebastião, São Paulo and Gujranwala were both measured on only 9 days over the last year, too few to compare them (it takes 30).

Right now

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

Gujranwala#10on the 24-hour board of 2,702, at 153 US AQI (58.2 µg/m³)

Side by side with São José dos Campos (the nearest), Rio Claro (Brazil's worst on 30 days).

Side by side with Gujrat (the nearest), Lahore (Pakistan's 2nd worst on 30 days), Gurugram (the world's 2nd 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.