What is the air quality trend in Coquimbo?

Over the past 20 days, Coquimbo had an average AQI of 57 based on station measurements. The worst day was 2026-05-17 with AQI 90.

How is Coquimbo air quality measured?

Air quality in Coquimbo is measured by ground-level monitoring stations that report PM2.5 and PM10 concentrations hourly. CERNS.IO aggregates readings from nearby stations and converts PM2.5 to the US EPA Air Quality Index (AQI) scale.

Air Quality History for Coquimbo, Chile

Name: Coquimbo Air Quality History
Creator: CERNS.IO
License: https://creativecommons.org/licenses/by/4.0/

Historical PM2.5 and AQI trend from monitoring stations near Coquimbo, Chile.

Current AQI
Moderate CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

372h

PM2.5 Station

372h · 2 stations

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-29	63	5–172	21.4 µg/m³	16h	2
2026-05-28	42	8–78	11.1 µg/m³	21h	2
2026-05-27	55	11–104	16.3 µg/m³	14h	2
2026-05-26	53	10–158	16.7 µg/m³	19h	2
2026-05-25	62	12–267	24.7 µg/m³	20h	2
2026-05-24	63	7–156	20.7 µg/m³	17h	2
2026-05-23	62	18–142	19.3 µg/m³	21h	2
2026-05-22	71	5–168	25.8 µg/m³	15h	2
2026-05-21	51	12–173	16.7 µg/m³	19h	2
2026-05-20	69	2–500	40.7 µg/m³	18h	2
2026-05-19	52	7–159	16.1 µg/m³	19h	1
2026-05-18	46	6–149	14.1 µg/m³	16h	2
2026-05-17	90	13–310	46.6 µg/m³	14h	2
2026-05-16	41	9–151	11.9 µg/m³	19h	2
2026-05-15	42	3–109	11.7 µg/m³	21h	2
2026-05-14	60	10–143	18.6 µg/m³	23h	2
2026-05-13	60	18–110	17.7 µg/m³	22h	2
2026-05-12	64	12–156	21.2 µg/m³	20h	2
2026-05-11	49	17–127	14.3 µg/m³	18h	2
2026-05-10	60	13–184	22.6 µg/m³	20h	2

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