What is the air quality trend in Siheungdong?

Over the past 18 days, Siheungdong had an average AQI of 57 based on station measurements. The worst day was with AQI .

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
Good

48 Hours 7 Days 14 Days 20 Days

Air Quality Index Trend

345h

PM2.5 Trend

345h · 1 station

Daily Summary

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-04-12	54	39–72	14.0 µg/m³	20h	1
2026-04-11	77	63–99	24.3 µg/m³	24h	1
2026-04-10	62	38–70	17.4 µg/m³	24h	1
2026-04-09	36	32–42	8.8 µg/m³	16h	1
2026-04-08	53	52–54	13.1 µg/m³	8h	1
2026-04-07	31	18–52	7.3 µg/m³	24h	1
2026-04-06	20	12–48	4.8 µg/m³	18h	1
2026-04-04	51	44–61	12.6 µg/m³	14h	1
2026-04-03	58	37–85	16.1 µg/m³	24h	1
2026-04-02	74	56–97	22.8 µg/m³	21h	1
2026-04-01	60	41–70	16.7 µg/m³	21h	1
2026-03-31	25	16–56	5.9 µg/m³	21h	1
2026-03-30	66	61–70	19.0 µg/m³	10h	1
2026-03-29	60	57–69	16.6 µg/m³	23h	1
2026-03-28	70	66–86	21.1 µg/m³	22h	1
2026-03-27	81	64–102	26.6 µg/m³	24h	1
2026-03-26	78	65–107	24.8 µg/m³	24h	1
2026-03-25	73	70–74	22.3 µg/m³	7h	1

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