What is the air quality trend in Kozakai-chō?

Over the past 3 days, Kozakai-chō had an average AQI of 38 based on station measurements. The worst day was 2026-10-20 with AQI 42.

How is Kozakai-chō air quality measured?

Air quality in Kozakai-chō 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 Kozakai-chō, Japan

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

Historical PM2.5 and AQI trend from monitoring stations near Kozakai-chō, Japan.

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

45h

PM2.5 Station

45h · 26 stations

Temperature GFS model

8pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-10-21	32	27–36	7.8 µg/m³	11.8	8h	32
2026-10-20	42	31–91	10.5 µg/m³	17.5	24h	33
2026-10-19	41	31–60	10.1 µg/m³	16.0	13h	29

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