SmogRank / World / Brazil / Bahia / September 2025

Most polluted cities in Bahia, Brazil, September 2025

3 cities in Bahia, Brazil ranked by their average PM2.5 over the 30 days. Worst: Dias d'Ávila at 8.2 µg/m³, #1,144 of 3,082 cities in the world. Cleanest: Candeias at 6.2. A city needs measurements on 70% of the days to be ranked.

← Dias d'Ávila 8.2 µg/m³ 20 µg/m³0
Every city in Bahia, Brazil ranked for September 2025, one column each, worst on the left and cleanest on the right; height is PM2.5 in µg/m³. Point at it to read a city; tap to open it.
  1. 1Dias d'Ávila
    46
  2. 2Camaçari
    42
  3. 3Candeias
    34
Good0–50
Moderate51–100
Sensitive groups101–150
Unhealthy151–200
Very unhealthy201–300
Hazardous301+

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, September 2025 · All cities in Brazil, September 2025 · Bahia now

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SmogRank, most polluted cities in Bahia, Brazil by mean PM2.5 (µg/m³), September 2025: each city's mean of its daily means, cities measured on 21 or more of the 30 days. Monitor data from national networks via OpenAQ and the publishers listed at smogrank.com/sources. smogrank.com/br/region/bahia/history/2025-09 (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.

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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.