What is the air quality trend in Oji?

Over the past 8 days, Oji had an average AQI of 62 based on station measurements. The worst day was 2026-10-14 with AQI 87.

How is Oji air quality measured?

Air quality in Oji 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 Oji, Japan

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

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

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

165h

PM2.5 Station

165h · 79 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-10-21	43	30–70	11.1 µg/m³	8h	73
2026-10-20	50	31–85	13.1 µg/m³	24h	68
2026-10-19	61	38–90	17.6 µg/m³	24h	64
2026-10-18	36	27–57	8.7 µg/m³	24h	68
2026-10-17	66	33–122	19.8 µg/m³	24h	65
2026-10-16	76	51–157	23.9 µg/m³	24h	58
2026-10-15	84	49–157	27.8 µg/m³	24h	71
2026-10-14	87	30–151	28.8 µg/m³	13h	55

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