SmogRank / World / Chile / Antofagasta / July 2025
Most polluted cities in Antofagasta, Chile, July 2025
2 cities in Antofagasta, Chile ranked by their average PM2.5 over the 31 days. Worst: Tocopilla at 23.0 µg/m³, #154 of 2,832 cities in the world. Cleanest: Calama at 17.7. A city needs measurements on 70% of the days to be ranked.
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 Antofagasta, Chile, PM2.5, July 2025, smogrank.com/cl/region/antofagasta/history/2025-07 (accessed 6 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.