SmogRank / World / South America / Chile / Antofagasta

Most polluted cities in Antofagasta, Chile

3 measured cities, last 30 days; 2 above the WHO 24-hour guideline. Worst: Antofagasta at 20.2 µg/m³, #379 in the world.

Tarapacá: 1 measured cityAntofagasta: 3 measured citiesAtacama: 1 measured city#3 Calama: 14.9 µg/m³#2 Tocopilla: 18.2 µg/m³#1 Antofagasta: 20.2 µg/m³
Each dot is a measured city, coloured by its PM2.5; tap a dot to open the city.
← Antofagasta 20.2 WHO 24-hour 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. 1Antofagasta 20.2
  2. 2Tocopilla 18.2
  3. 3Calama 14.9
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+

PM2.5 in µg/m³, coloured by the US EPA's PM2.5 categories. 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, last 30 days to 2 Oct 2026, 05:00 UTC, smogrank.com/cl/region/antofagasta?w=30d.

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Updated 2026-10-02 05:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors in µg/m³.