What is the air quality trend in Yŏnmu?

Over the past 8 days, Yŏnmu had an average AQI of 49 based on station measurements. The worst day was 2026-07-16 with AQI 57.

How is Yŏnmu air quality measured?

Air quality in Yŏnmu 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 Yŏnmu, South Korea

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

167h

PM2.5 Station

167h · 34 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-22	53	53–53	12.9 µg/m³	1h	34
2026-07-21	48	34–70	12.3 µg/m³	24h	55
2026-07-20	39	23–52	9.5 µg/m³	24h	50
2026-07-19	47	25–60	11.7 µg/m³	24h	45
2026-07-18	46	27–72	11.5 µg/m³	24h	49
2026-07-17	56	28–71	15.0 µg/m³	24h	36
2026-07-16	57	20–71	15.4 µg/m³	24h	40
2026-07-15	50	31–59	12.4 µg/m³	22h	29

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