What is the air quality trend in Changyŏn?

Over the past 21 days, Changyŏn had an average AQI of 52 based on station measurements. The worst day was 2026-06-03 with AQI 72.

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
Moderate CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

249h

PM2.5 Station

249h · 1 station

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-06-09	65	44–82	19.2 µg/m³	3h	1
2026-06-08	54	33–63	14.3 µg/m³	10h	1
2026-06-07	54	24–94	15.0 µg/m³	14h	1
2026-06-06	49	35–91	13.0 µg/m³	11h	1
2026-06-05	51	34–95	13.5 µg/m³	14h	1
2026-06-04	54	21–129	14.7 µg/m³	15h	1
2026-06-03	72	23–109	22.9 µg/m³	9h	1
2026-06-02	68	47–91	20.3 µg/m³	9h	1
2026-06-01	57	6–82	16.2 µg/m³	9h	1
2026-05-31	62	44–93	17.8 µg/m³	15h	1
2026-05-30	68	34–104	20.6 µg/m³	11h	1
2026-05-29	57	8–119	17.3 µg/m³	13h	1
2026-05-28	54	8–89	15.2 µg/m³	14h	1
2026-05-27	37	21–63	9.3 µg/m³	16h	1
2026-05-26	49	10–82	13.8 µg/m³	11h	1
2026-05-25	50	7–74	13.5 µg/m³	15h	1
2026-05-24	53	24–114	14.3 µg/m³	18h	1
2026-05-23	46	13–70	11.6 µg/m³	14h	1
2026-05-22	36	4–70	9.2 µg/m³	11h	1
2026-05-21	31	11–54	7.6 µg/m³	10h	1
2026-05-20	33	24–49	8.0 µg/m³	7h	1

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