What is the air quality trend in Ōguchi?

Over the past 8 days, Ōguchi had an average AQI of 31 based on station measurements. The worst day was 2026-05-30 with AQI 36.

How is Ōguchi air quality measured?

Air quality in Ōguchi 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 Ōguchi, Japan

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

166h

PM2.5 Station

166h · 28 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-05-30	36	31–39	8.7 µg/m³	9.2	4h	48
2026-05-29	34	28–41	8.3 µg/m³	8.3	24h	41
2026-05-28	30	21–43	7.2 µg/m³	7.7	24h	41
2026-05-27	27	20–37	6.5 µg/m³	7.1	24h	47
2026-05-26	31	24–39	7.4 µg/m³	9.3	24h	45
2026-05-25	34	27–42	8.1 µg/m³	11.4	24h	42
2026-05-24	32	23–43	7.7 µg/m³	10.9	24h	45
2026-05-23	31	24–38	7.3 µg/m³	7.9	18h	46

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