SmogRank / World / South America / Chile / Antofagasta
Most polluted cities in Antofagasta, Chile
No city in Antofagasta, Chile has enough readings to rank for the last 24 hours.
A city joins the 24-hour ranking with 18 hours of readings in the last 24; none here has that right now, so there is nothing to map or chart.
Last 7 days: 3 measured cities · Last 30 days: 3 measured cities · This year: 3 measured cities
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
Updated 2026-10-02 07:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index.