What is the air quality trend in Incheon?

Over the past 15 days, Incheon had an average AQI of 54 based on station measurements. The worst day was 2026-05-30 with AQI 75.

How is Incheon air quality measured?

Air quality in Incheon 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 Incheon, South Korea

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

Historical PM2.5 and AQI trend from monitoring stations near Incheon, South Korea.

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

336h

PM2.5 Station

336h · 108 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-30	75	62–88	23.5 µg/m³	9h	110
2026-05-29	63	52–84	17.9 µg/m³	24h	102
2026-05-28	55	35–87	15.0 µg/m³	24h	101
2026-05-27	35	29–42	8.5 µg/m³	24h	103
2026-05-26	50	28–67	12.5 µg/m³	24h	106
2026-05-25	57	32–64	15.1 µg/m³	24h	119
2026-05-24	58	29–66	15.9 µg/m³	24h	110
2026-05-23	53	39–60	13.5 µg/m³	24h	111
2026-05-22	50	36–59	12.5 µg/m³	24h	118
2026-05-21	37	31–46	8.9 µg/m³	24h	115
2026-05-20	42	32–75	10.3 µg/m³	24h	122
2026-05-19	65	48–76	18.6 µg/m³	24h	127
2026-05-18	68	62–76	20.0 µg/m³	24h	127
2026-05-17	62	25–122	17.6 µg/m³	24h	148
2026-05-16	52	26–83	13.8 µg/m³	15h	111

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