What is the air quality trend in Chios?

Over the past 15 days, Chios had an average AQI of 35 based on station measurements. The worst day was 2026-10-20 with AQI 51.

How is Chios air quality measured?

Air quality in Chios 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 Chios, Greece

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

Historical PM2.5 and AQI trend from monitoring stations near Chios, Greece.

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

196h

PM2.5 Station

196h · 1 station

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-10-21	24	20–31	5.8 µg/m³	3h	1
2026-10-20	51	2–82	14.0 µg/m³	14h	2
2026-10-19	32	10–68	8.1 µg/m³	12h	1
2026-10-18	46	9–127	13.4 µg/m³	10h	1
2026-10-17	49	14–174	17.0 µg/m³	15h	1
2026-10-16	35	12–94	9.6 µg/m³	11h	2
2026-10-15	32	10–81	8.6 µg/m³	16h	1
2026-10-14	33	17–76	8.4 µg/m³	14h	1
2026-10-13	37	8–143	10.5 µg/m³	14h	2
2026-10-12	32	4–71	7.9 µg/m³	16h	1
2026-10-11	30	12–67	7.7 µg/m³	16h	1
2026-10-10	39	16–107	10.4 µg/m³	15h	2
2026-10-09	39	15–78	10.4 µg/m³	16h	1
2026-10-08	28	12–56	6.8 µg/m³	13h	1
2026-10-07	28	12–49	6.8 µg/m³	11h	1

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