What is the air quality trend in Chiryū?

Over the past 8 days, Chiryū had an average AQI of 41 based on station measurements. The worst day was 2026-08-01 with AQI 53.

How is Chiryū air quality measured?

Air quality in Chiryū 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 Chiryū, Japan

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

Historical PM2.5 and AQI trend from monitoring stations near Chiryū, Japan.

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

164h

PM2.5 Station

164h · 57 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-08-08	30	28–33	7.1 µg/m³	14.0	3h	48
2026-08-07	30	23–38	7.3 µg/m³	17.0	22h	47
2026-08-06	45	24–61	11.2 µg/m³	14.7	24h	28
2026-08-05	45	27–60	10.9 µg/m³	17.8	24h	28
2026-08-04	42	31–52	10.0 µg/m³	16.6	24h	40
2026-08-03	39	26–53	9.5 µg/m³	17.3	24h	41
2026-08-02	47	30–54	11.3 µg/m³	23.8	24h	42
2026-08-01	53	46–59	13.1 µg/m³	18.2	19h	45

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