Chile AQI Trends
Compare yearly air-quality direction, best years, worst years, and trend deltas. This pilot covers 20 eligible cities with OpenAQ-derived daily AQI history.
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Yearly EPA AQI trend
City analytics table
| City | Avg AQI | PM2.5 | Worst month | Trend | Coverage |
|---|---|---|---|---|---|
| Coyhaique Aysén, Chile | 117 | 51.5 ug/m3 | May | n/a | 367 days · 2 locations |
| Nacimiento Biobío, Chile | 113 | 46.5 ug/m3 | May | n/a | 367 days · 3 locations |
| Villarrica Araucanía, Chile | 110 | 43.4 ug/m3 | July | n/a | 266 days · 1 locations |
| Osorno Los Lagos, Chile | 106 | 43.0 ug/m3 | May | n/a | 363 days · 3 locations |
| Cochrane Aysén, Chile | 106 | 45.0 ug/m3 | May | n/a | 188 days · 1 locations |
| Puerto Varas Los Lagos, Chile | 106 | 41.1 ug/m3 | July | n/a | 366 days · 1 locations |
| El Bosque Región Metropolitana, Chile | 101 | 35.9 ug/m3 | July | n/a | 357 days · 1 locations |
| Alerce Los Lagos, Chile | 99 | 36.2 ug/m3 | July | n/a | 360 days · 1 locations |
| La Unión Los Ríos, Chile | 98 | 34.5 ug/m3 | May | n/a | 350 days · 1 locations |
| Los Cerrillos Región Metropolitana, Chile | 97 | 33.7 ug/m3 | July | n/a | 363 days · 1 locations |
| Renca Región Metropolitana, Chile | 96 | 34.0 ug/m3 | July | n/a | 366 days · 2 locations |
| Curanilahue Biobío, Chile | 96 | 34.2 ug/m3 | May | n/a | 359 days · 1 locations |
| La Florida Región Metropolitana, Chile | 94 | 31.7 ug/m3 | July | n/a | 364 days · 1 locations |
| Rengo Libertador General Bernardo O’Higgins, Chile | 94 | 32.3 ug/m3 | July | n/a | 341 days · 1 locations |
| Rancagua Libertador General Bernardo O’Higgins, Chile | 94 | 32.7 ug/m3 | July | n/a | 365 days · 2 locations |
| Talcahuano Biobío, Chile | 93 | 32.8 ug/m3 | May | n/a | 367 days · 2 locations |
| Hualqui Biobío, Chile | 93 | 32.2 ug/m3 | July | n/a | 335 days · 1 locations |
| Padre Las Casas Araucanía, Chile | 93 | 32.2 ug/m3 | July | n/a | 367 days · 5 locations |
| Curicó Maule, Chile | 92 | 32.2 ug/m3 | July | n/a | 365 days · 1 locations |
| Quilicura Región Metropolitana, Chile | 92 | 30.9 ug/m3 | July | n/a | 359 days · 1 locations |
| Coronel Biobío, Chile | 92 | 31.1 ug/m3 | July | n/a | 367 days · 6 locations |
| Puerto Aysén Aysén, Chile | 92 | 30.6 ug/m3 | May | n/a | 361 days · 1 locations |
| Ñiquén Ñuble, Chile | 92 | 33.2 ug/m3 | May | n/a | 262 days · 2 locations |
| Chillán Ñuble, Chile | 91 | 31.7 ug/m3 | May | n/a | 362 days · 2 locations |
| Santiago Santiago Metropolitan, Chile | 91 | 30.0 ug/m3 | July | n/a | 356 days · 1 locations |
| La Pintana Región Metropolitana, Chile | 91 | 29.7 ug/m3 | July | n/a | 366 days · 1 locations |
| Huachipato Biobío, Chile | 90 | 30.2 ug/m3 | July | n/a | 367 days · 5 locations |
| Puerto Montt Los Lagos, Chile | 90 | 30.7 ug/m3 | May | n/a | 359 days · 1 locations |
| El Monte Región Metropolitana, Chile | 89 | 29.7 ug/m3 | July | n/a | 363 days · 1 locations |
| Valdivia Los Ríos, Chile | 88 | 29.5 ug/m3 | July | n/a | 366 days · 2 locations |
| San Fernando Libertador General Bernardo O’Higgins, Chile | 88 | 29.1 ug/m3 | June | n/a | 340 days · 1 locations |
| Talca Maule, Chile | 86 | 28.5 ug/m3 | July | n/a | 367 days · 3 locations |
| Quillota Valparaiso, Chile | 86 | 27.7 ug/m3 | July | n/a | 353 days · 3 locations |
| Laja Biobío, Chile | 86 | 30.6 ug/m3 | May | n/a | 310 days · 1 locations |
| Los Ángeles Biobío, Chile | 85 | 28.2 ug/m3 | May | n/a | 364 days · 2 locations |
| Cauquenes Maule, Chile | 85 | 27.2 ug/m3 | July | n/a | 363 days · 1 locations |
| Tomé Biobío, Chile | 83 | 25.6 ug/m3 | July | n/a | 354 days · 1 locations |
| Chiguayante Biobío, Chile | 82 | 25.4 ug/m3 | July | n/a | 358 days · 1 locations |
| Lo Barnechea Región Metropolitana, Chile | 81 | 25.1 ug/m3 | July | n/a | 361 days · 6 locations |
| Quintero Valparaiso, Chile | 81 | 24.8 ug/m3 | July | n/a | 367 days · 9 locations |
| Quilpué Valparaiso, Chile | 80 | 24.1 ug/m3 | July | n/a | 328 days · 1 locations |
| Tocopilla Antofagasta, Chile | 79 | 24.7 ug/m3 | December | n/a | 367 days · 4 locations |
| Concepcion Valparaiso, Chile | 78 | 23.2 ug/m3 | July | n/a | 354 days · 1 locations |
| Viña del Mar Valparaiso, Chile | 76 | 22.2 ug/m3 | July | n/a | 365 days · 1 locations |
| Concón Valparaiso, Chile | 75 | 21.7 ug/m3 | July | n/a | 365 days · 5 locations |
| Antofagasta Antofagasta, Chile | 73 | 21.0 ug/m3 | July | n/a | 366 days · 1 locations |
| Valparaiso Valparaiso, Chile | 73 | 21.0 ug/m3 | February | n/a | 139 days · 1 locations |
| Arica Arica y Parinacota, Chile | 72 | 20.1 ug/m3 | July | n/a | 355 days · 1 locations |
| Lota Biobío, Chile | 71 | 27.9 ug/m3 | July | n/a | 341 days · 3 locations |
| Coquimbo Coquimbo, Chile | 71 | 19.7 ug/m3 | May | n/a | 358 days · 1 locations |
| La Serena Coquimbo, Chile | 70 | 19.3 ug/m3 | July | n/a | 358 days · 1 locations |
| Copiapó Atacama, Chile | 69 | 19.2 ug/m3 | July | n/a | 362 days · 4 locations |
| Huasco Atacama, Chile | 68 | 18.4 ug/m3 | May | n/a | 367 days · 12 locations |
| Calama Antofagasta, Chile | 67 | 18.0 ug/m3 | December | n/a | 367 days · 6 locations |
| Alto Hospicio Tarapacá, Chile | 65 | 16.7 ug/m3 | March | n/a | 351 days · 1 locations |
| Linares Maule, Chile | 65 | 16.7 ug/m3 | December | n/a | 78 days · 1 locations |
| Salamanca Coquimbo, Chile | 63 | 15.4 ug/m3 | November | n/a | 363 days · 1 locations |
| Chuquicamata Antofagasta, Chile | 60 | n/a ug/m3 | September | n/a | 350 days · 1 locations |
| Andacollo Coquimbo, Chile | 39 | n/a ug/m3 | April | n/a | 367 days · 3 locations |
| Chañaral Atacama, Chile | 36 | n/a ug/m3 | August | n/a | 245 days · 1 locations |
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.
Chile trends city pages
CoyhaiqueAQI 117NacimientoAQI 113VillarricaAQI 110OsornoAQI 106CochraneAQI 106Puerto VarasAQI 106El BosqueAQI 101AlerceAQI 99La UniónAQI 98Los CerrillosAQI 97RencaAQI 96CuranilahueAQI 96La FloridaAQI 94RengoAQI 94RancaguaAQI 94TalcahuanoAQI 93HualquiAQI 93Padre Las CasasAQI 93CuricóAQI 92QuilicuraAQI 92CoronelAQI 92Puerto AysénAQI 92ÑiquénAQI 92ChillánAQI 91