What is the air quality trend in Siheungdong?

Over the past 15 days, Siheungdong had an average AQI of 55 based on station measurements. The worst day was 2026-05-30 with AQI 76.

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

337h

PM2.5 Station

337h · 21 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-30	76	64–89	24.0 µg/m³	11h	97
2026-05-29	64	46–84	18.1 µg/m³	24h	99
2026-05-28	53	23–83	14.5 µg/m³	24h	95
2026-05-27	36	29–42	8.6 µg/m³	24h	98
2026-05-26	49	28–59	12.2 µg/m³	24h	102
2026-05-25	57	31–67	15.3 µg/m³	24h	119
2026-05-24	60	31–69	16.5 µg/m³	24h	101
2026-05-23	55	44–62	14.0 µg/m³	24h	110
2026-05-22	50	36–58	12.3 µg/m³	24h	119
2026-05-21	38	31–46	9.1 µg/m³	24h	118
2026-05-20	42	34–84	10.4 µg/m³	24h	120
2026-05-19	65	42–76	18.8 µg/m³	24h	128
2026-05-18	68	63–71	20.4 µg/m³	24h	128
2026-05-17	62	28–82	17.6 µg/m³	24h	149
2026-05-16	52	15–82	13.9 µg/m³	14h	120

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