SmogRank / World / Brazil / Bahia / 2023
Most polluted cities in Bahia, Brazil, 2023
1 city in Bahia, Brazil ranked by their average PM2.5 over the 365 days; 1 above the WHO annual guideline (5.0 µg/m³). The only one: Dias d'Ávila at 7.2 µg/m³, #1,014 of 1,330 cities in the world. A city needs measurements on 70% of the days to be ranked.
OpenAQ's archive, where our readings come from, has almost none for 56 of these 365 days. Cities in the United States and Europe have them from the EPA's and the European Environment Agency's own records of the same monitors; elsewhere a city's average is over its other days. Why.
- 1Dias d'Ávila 401.4×
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
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SmogRank, most polluted cities in Bahia, Brazil by mean PM2.5 (µg/m³), 2023: each city's mean of its daily means, cities measured on 256 or more of the 365 days. Monitor data from national networks via OpenAQ and the publishers listed at smogrank.com/sources. smogrank.com/br/region/bahia/history/2023 (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.