What is the air quality trend in Ongjin?

Over the past 15 days, Ongjin had an average AQI of 53 based on station measurements. The worst day was 2026-05-30 with AQI 79.

How is Ongjin air quality measured?

Air quality in Ongjin 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 Ongjin, Korea, Democratic People's Republic of

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

Historical PM2.5 and AQI trend from monitoring stations near Ongjin, Korea, Democratic People's Republic of.

Current AQI
Moderate CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

231h

PM2.5 Station

231h · 1 station

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-30	79	62–98	25.2 µg/m³	3h	2
2026-05-29	55	14–89	15.0 µg/m³	14h	1
2026-05-28	55	30–114	15.3 µg/m³	8h	1
2026-05-27	30	10–57	7.3 µg/m³	19h	1
2026-05-26	41	12–89	10.8 µg/m³	15h	1
2026-05-25	61	37–80	17.2 µg/m³	12h	2
2026-05-24	61	16–122	18.1 µg/m³	11h	1
2026-05-23	52	11–78	14.0 µg/m³	19h	2
2026-05-22	48	20–72	12.4 µg/m³	19h	2
2026-05-21	37	9–68	9.3 µg/m³	19h	1
2026-05-20	41	8–63	10.0 µg/m³	19h	2
2026-05-19	67	12–111	20.4 µg/m³	20h	2
2026-05-18	73	34–95	22.9 µg/m³	20h	2
2026-05-17	60	18–72	16.8 µg/m³	20h	3
2026-05-16	40	8–70	10.2 µg/m³	13h	2

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