Chile City AQI Comparison
Rank cities side by side using OpenAQ PM2.5 and PM10 history normalized to US EPA AQI. This pilot covers 60 eligible cities with OpenAQ-derived daily AQI history.
Compare two cities
vs
Featured comparisons
Coyhaique vs Salamanca→
Highest vs cleanest city
AQI gap 54367 / 363 days
Coyhaique vs Nacimiento→
Highest-AQI pair
AQI gap 4367 / 367 days
Coyhaique vs El Monte→
High vs mid-range city
AQI gap 28367 / 363 days
Nacimiento vs Salamanca→
Second-highest vs cleanest city
AQI gap 50367 / 363 days
Villarrica vs Linares→
High vs low-AQI city
AQI gap 45266 / 78 days
Nacimiento vs Linares→
High vs low-AQI city
AQI gap 48367 / 78 days
Nacimiento vs Villarrica→
Similar high-AQI cities
AQI gap 3367 / 266 days
Villarrica vs Alto Hospicio→
High vs low-AQI city
AQI gap 45266 / 351 days
Villarrica vs Osorno→
Similar high-AQI cities
AQI gap 4266 / 363 days
Osorno vs Calama→
High vs low-AQI city
AQI gap 39363 / 367 days
Osorno vs Cochrane→
Similar high-AQI cities
AQI gap 0363 / 188 days
Cochrane vs Huasco→
High vs low-AQI city
AQI gap 38188 / 367 days
Methodology
The extractor maps OpenAQ monitoring locations to the nearest AQI Now city in the same country, aggregates PM2.5 and PM10 to daily city averages, and converts those concentrations to US EPA AQI. Country tool pages use only city summaries that satisfy the configured minimum daily coverage threshold.