What is the air quality trend in Ōmuta?

Over the past 3 days, Ōmuta had an average AQI of 42 based on station measurements. The worst day was 2026-10-19 with AQI 51.

How is Ōmuta air quality measured?

Air quality in Ōmuta 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 Ōmuta, Japan

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

45h

PM2.5 Station

45h · 34 stations

Temperature GFS model

8pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-10-21	31	27–37	7.4 µg/m³	7h	37
2026-10-20	45	28–160	12.3 µg/m³	24h	30
2026-10-19	51	38–100	13.2 µg/m³	14h	28

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