What is the air quality trend in Hoeyang?

Over the past 21 days, Hoeyang had an average AQI of 50 based on station measurements. The worst day was 2026-05-16 with AQI 71.

How is Hoeyang air quality measured?

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

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

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

186h

PM2.5 Station

186h · 1 station

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-30	57	57–57	14.9 µg/m³	1h	1
2026-05-29	59	1–107	17.5 µg/m³	14h	1
2026-05-28	65	32–109	19.9 µg/m³	11h	1
2026-05-27	28	1–53	6.7 µg/m³	9h	1
2026-05-26	50	20–74	13.1 µg/m³	9h	1
2026-05-25	54	14–80	15.9 µg/m³	4h	1
2026-05-24	55	25–87	15.6 µg/m³	13h	1
2026-05-23	52	10–99	14.5 µg/m³	12h	1
2026-05-22	42	4–68	11.6 µg/m³	10h	1
2026-05-21	29	2–79	7.6 µg/m³	12h	1
2026-05-20	32	9–55	7.9 µg/m³	9h	1
2026-05-19	56	16–87	16.9 µg/m³	5h	1
2026-05-18	48	6–73	13.7 µg/m³	6h	1
2026-05-17	54	3–104	16.1 µg/m³	5h	1
2026-05-16	71	42–109	21.7 µg/m³	7h	1
2026-05-15	61	9–142	19.3 µg/m³	9h	1
2026-05-14	57	13–82	16.3 µg/m³	9h	1
2026-05-13	54	25–74	15.1 µg/m³	6h	1
2026-05-12	39	13–56	9.5 µg/m³	8h	1
2026-05-11	50	10–89	13.6 µg/m³	13h	1
2026-05-10	51	34–65	13.2 µg/m³	14h	1

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