What is the air quality trend in Ōfunato?

Over the past 8 days, Ōfunato had an average AQI of 51 based on station measurements. The worst day was 2026-10-15 with AQI 89.

How is Ōfunato air quality measured?

Air quality in Ōfunato 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 Ōfunato, Japan

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

152h

PM2.5 Station

152h · 1 station

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-10-21	24	10–42	5.8 µg/m³	6h	3
2026-10-20	46	1–110	12.3 µg/m³	23h	3
2026-10-19	56	12–140	16.0 µg/m³	20h	3
2026-10-18	28	2–78	7.1 µg/m³	22h	2
2026-10-17	42	5–186	14.1 µg/m³	22h	2
2026-10-16	60	12–130	18.4 µg/m³	22h	3
2026-10-15	89	6–434	46.6 µg/m³	23h	2
2026-10-14	68	20–171	27.3 µg/m³	14h	2

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