What is the air quality trend in Katsuta?

Over the past 15 days, Katsuta had an average AQI of 46 based on station measurements. The worst day was 2026-10-11 with AQI 61.

How is Katsuta air quality measured?

Air quality in Katsuta 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 Katsuta, Japan

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

331h

PM2.5 Station

331h · 12 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-10-21	39	23–56	9.6 µg/m³	8h	13
2026-10-20	41	23–63	10.1 µg/m³	24h	10
2026-10-19	53	24–178	17.1 µg/m³	24h	9
2026-10-18	33	21–63	8.0 µg/m³	24h	11
2026-10-17	45	24–113	11.6 µg/m³	24h	9
2026-10-16	52	19–127	14.0 µg/m³	24h	9
2026-10-15	51	17–134	14.6 µg/m³	24h	7
2026-10-14	47	18–164	13.8 µg/m³	24h	8
2026-10-13	53	25–97	14.8 µg/m³	23h	7
2026-10-12	45	18–74	11.3 µg/m³	23h	8
2026-10-11	61	22–236	23.0 µg/m³	24h	6
2026-10-10	41	25–70	10.1 µg/m³	24h	8
2026-10-09	44	12–94	11.4 µg/m³	24h	8
2026-10-08	38	24–59	9.3 µg/m³	24h	13
2026-10-07	47	30–64	11.6 µg/m³	13h	12

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