SmogRank / World / South America / Chile / Antofagasta

Most polluted cities in Antofagasta, Chile

3 measured cities, this year; 3 above the WHO annual guideline. Worst: Tocopilla at 23.6 µg/m³, #406 in the world.

Tarapacá: 1 measured cityAntofagasta: 3 measured citiesAtacama: 1 measured city#3 Calama: 16.1 µg/m³#2 Antofagasta: 21.1 µg/m³#1 Tocopilla: 23.6 µg/m³
Each dot is a measured city, coloured by its PM2.5; tap a dot to open the city.
← Tocopilla 23.6 WHO annual guideline
Every measured city in Antofagasta, Chile, one column each, worst on the left and cleanest on the right. Point at it to read a city; tap to open it.
  1. 1Tocopilla 784.7×
  2. 2Antofagasta 734.2×
  3. 3Calama 643.2×
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

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SmogRank, most polluted cities in Antofagasta, Chile, PM2.5, this year to 2 Oct 2026, 05:00 UTC, smogrank.com/cl/region/antofagasta?w=year.

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Updated 2026-10-02 05:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.