What is the air quality trend in Siheungdong?

Over the past 8 days, Siheungdong had an average AQI of 56 based on station measurements. The worst day was 2026-05-30 with AQI 75.

How is Siheungdong air quality measured?

Air quality in Siheungdong 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 Siheungdong, South Korea

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

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

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

167h

PM2.5 Station

167h · 110 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-30	75	63–89	23.5 µg/m³	9h	112
2026-05-29	63	53–84	17.8 µg/m³	24h	104
2026-05-28	55	34–86	15.1 µg/m³	24h	103
2026-05-27	36	28–42	8.5 µg/m³	24h	106
2026-05-26	50	28–67	12.5 µg/m³	24h	107
2026-05-25	57	34–64	15.1 µg/m³	24h	121
2026-05-24	59	33–67	15.9 µg/m³	24h	113
2026-05-23	57	53–60	14.7 µg/m³	14h	121

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