What is the air quality trend in Masan?

Over the past 8 days, Masan had an average AQI of 40 based on station measurements. The worst day was 2026-10-16 with AQI 48.

How is Masan air quality measured?

Air quality in Masan 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 Masan, South Korea

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

165h

PM2.5 Station

165h · 31 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-10-21	44	44–44	10.6 µg/m³	1h	31
2026-10-20	42	26–56	10.1 µg/m³	24h	28
2026-10-19	38	21–54	9.0 µg/m³	24h	33
2026-10-18	39	15–57	9.4 µg/m³	24h	25
2026-10-17	43	12–63	10.9 µg/m³	24h	26
2026-10-16	48	15–68	12.6 µg/m³	24h	33
2026-10-15	36	18–48	8.5 µg/m³	24h	34
2026-10-14	34	16–50	8.2 µg/m³	20h	35

Back to Masan Air Quality