SmogRank / World / Brazil / Bahia / December 2025
Most polluted cities in Bahia, Brazil, December 2025
1 city in Bahia, Brazil ranked by their average PM2.5 over the 31 days. The only one: Dias d'Ávila at 8.1 µg/m³, #1,799 of 2,987 cities in the world. A city needs measurements on 70% of the days to be ranked.
- 1Dias d'Ávila 45
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, December 2025 · All cities in Brazil, December 2025 · Bahia now
Use this board
SmogRank, most polluted cities in Bahia, Brazil by mean PM2.5 (µg/m³), December 2025: each city's mean of its daily means, cities measured on 22 or more of the 31 days. Monitor data from national networks via OpenAQ and the publishers listed at smogrank.com/sources. smogrank.com/br/region/bahia/history/2025-12 (accessed 11 Oct 2026). Some readings from Uzhydromet (Uzbekistan's Hydrometeorological Service); Department of Environment, Nepal; Vietnam's government monitors; Aurassure; Umhverfisstofnun (Environment Agency of Iceland); RMCAB (Secretaría Distrital de Ambiente, Bogotá); Love My Air (City and County of Denver), no reuse terms published.
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.