What is the air quality trend in Katō?

Over the past 8 days, Katō had an average AQI of 46 based on station measurements. The worst day was 2026-08-01 with AQI 57.

How is Katō air quality measured?

Air quality in Katō 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 Katō, Japan

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

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

Current AQI
Good CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

165h

PM2.5 Station

165h · 53 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-08-08	34	27–48	8.1 µg/m³	6h	49
2026-08-07	37	6–61	8.9 µg/m³	24h	44
2026-08-06	55	40–63	13.9 µg/m³	24h	40
2026-08-05	51	32–60	12.8 µg/m³	24h	29
2026-08-04	44	34–63	10.8 µg/m³	24h	34
2026-08-03	45	29–66	11.2 µg/m³	24h	36
2026-08-02	48	30–67	12.0 µg/m³	24h	43
2026-08-01	57	46–77	14.9 µg/m³	15h	45

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