What is the air quality trend in Jeju City?

Over the past 3 days, Jeju City had an average AQI of 66 based on station measurements. The worst day was 2026-05-28 with AQI 71.

How is Jeju City air quality measured?

Air quality in Jeju City 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 Jeju City, South Korea

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

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

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

47h

PM2.5 Station

47h · 13 stations

Temperature GFS model

8pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-30	67	56–81	19.5 µg/m³	14h	15
2026-05-29	61	45–86	17.1 µg/m³	24h	12
2026-05-28	71	50–93	21.7 µg/m³	9h	11

Back to Jeju City Air Quality