What is the air quality trend in Chungju?

Over the past 8 days, Chungju had an average AQI of 42 based on station measurements. The worst day was 2026-10-21 with AQI 57.

How is Chungju air quality measured?

Air quality in Chungju 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 Chungju, South Korea

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

166h

PM2.5 Station

166h · 16 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-10-21	57	53–61	15.1 µg/m³	3h	10
2026-10-20	40	16–58	9.9 µg/m³	24h	14
2026-10-19	36	10–54	8.8 µg/m³	24h	23
2026-10-18	36	13–54	8.8 µg/m³	24h	16
2026-10-17	49	17–123	12.9 µg/m³	24h	14
2026-10-16	49	5–65	13.1 µg/m³	24h	20
2026-10-15	40	16–169	11.8 µg/m³	24h	16
2026-10-14	35	20–64	8.5 µg/m³	19h	20

Back to Chungju Air Quality