What is the air quality trend in Kōka?

Over the past 8 days, Kōka had an average AQI of 42 based on station measurements. The worst day was 2026-08-01 with AQI 54.

How is Kōka air quality measured?

Air quality in Kōka 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 Kōka, Japan

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

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

Current AQI
Good CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

163h

PM2.5 Station

163h · 42 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-08-08	26	23–28	6.1 µg/m³	2h	38
2026-08-07	32	23–46	7.5 µg/m³	22h	38
2026-08-06	51	28–70	12.8 µg/m³	24h	22
2026-08-05	45	28–57	11.1 µg/m³	24h	21
2026-08-04	43	34–57	10.3 µg/m³	24h	31
2026-08-03	41	25–58	10.0 µg/m³	24h	31
2026-08-02	47	26–56	11.3 µg/m³	24h	37
2026-08-01	54	45–65	13.6 µg/m³	19h	37

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