What is the air quality trend in Changyŏn?

Over the past 14 days, Changyŏn had an average AQI of 47 based on station measurements. The worst day was 2026-10-07 with AQI 78.

How is Changyŏn air quality measured?

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

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

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

Current AQI
Good CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

182h

PM2.5 Station

182h · 1 station

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-10-20	42	9–164	13.2 µg/m³	15h	1
2026-10-19	38	5–72	10.0 µg/m³	14h	1
2026-10-18	34	3–66	8.6 µg/m³	15h	1
2026-10-17	50	17–82	13.3 µg/m³	14h	1
2026-10-16	43	1–74	11.6 µg/m³	15h	1
2026-10-15	37	7–61	9.1 µg/m³	20h	1
2026-10-14	28	1–50	6.7 µg/m³	9h	1
2026-10-13	48	9–91	14.0 µg/m³	12h	2
2026-10-12	55	21–161	17.1 µg/m³	16h	1
2026-10-11	46	2–102	13.0 µg/m³	15h	1
2026-10-10	64	1–103	20.1 µg/m³	16h	1
2026-10-09	58	13–112	16.8 µg/m³	17h	1
2026-10-08	46	38–61	11.7 µg/m³	3h	1
2026-10-07	78	78–78	24.9 µg/m³	1h	1

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