What is the air quality trend in Kai?

Over the past 8 days, Kai had an average AQI of 46 based on station measurements. The worst day was 2026-10-15 with AQI 63.

How is Kai air quality measured?

Air quality in Kai 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 Kai, Japan

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

152h

PM2.5 Station

152h · 4 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-10-21	48	25–68	12.4 µg/m³	6h	3
2026-10-20	44	14–84	11.3 µg/m³	23h	3
2026-10-19	48	18–91	12.8 µg/m³	22h	3
2026-10-18	33	14–81	8.7 µg/m³	20h	3
2026-10-17	38	13–75	9.6 µg/m³	24h	2
2026-10-16	51	19–168	15.5 µg/m³	20h	2
2026-10-15	63	24–500	50.0 µg/m³	23h	3
2026-10-14	46	9–152	13.0 µg/m³	14h	2

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