What is the air quality trend in Kokubu-matsuki?

Over the past 3 days, Kokubu-matsuki had an average AQI of 26 based on station measurements. The worst day was 2026-07-02 with AQI 34.

How is Kokubu-matsuki air quality measured?

Air quality in Kokubu-matsuki 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 Kokubu-matsuki, Japan

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

Historical PM2.5 and AQI trend from monitoring stations near Kokubu-matsuki, Japan.

104

Current AQI
Unhealthy for sensitive groups Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

PM2.5 Station

4h · 4 stations

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-06	30	30–30	7.2 µg/m³	1h	4
2026-07-03	16	16–16	3.8 µg/m³	1h	1
2026-07-02	34	25–42	8.0 µg/m³	2h	2

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