SmogRank / World / Brazil / Rio de Janeiro / February 2025
Most polluted cities in Rio de Janeiro, Brazil, February 2025
1 city in Rio de Janeiro, Brazil ranked by their average PM2.5 over the 28 days. The only one: Duque de Caxias at 9.7 µg/m³, #1,212 of 2,574 cities in the world. A city needs measurements on 70% of the days to be ranked.
- 1Duque de Caxias 52
The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales
All cities in the world, February 2025 · All cities in Brazil, February 2025 · Rio de Janeiro now
Use this board
SmogRank, most polluted cities in Rio de Janeiro, Brazil, PM2.5, February 2025, smogrank.com/br/region/rio-de-janeiro/history/2025-02 (accessed 7 Oct 2026).
You're welcome to reuse a single chart, image or figure with this citation and a link. Terms. Raw monitor readings in bulk are published by OpenAQ, under each provider's licence.