What is the air quality trend in Katano?

Over the past 8 days, Katano had an average AQI of 63 based on station measurements. The worst day was 2026-10-14 with AQI 86.

How is Katano air quality measured?

Air quality in Katano 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 Katano, Japan

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

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

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

165h

PM2.5 Station

165h · 66 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-10-21	42	32–65	10.5 µg/m³	7h	73
2026-10-20	50	33–72	13.0 µg/m³	24h	69
2026-10-19	60	40–81	16.8 µg/m³	24h	64
2026-10-18	42	29–73	10.4 µg/m³	24h	71
2026-10-17	66	37–119	19.2 µg/m³	24h	67
2026-10-16	77	44–155	24.5 µg/m³	24h	54
2026-10-15	85	51–153	28.0 µg/m³	24h	69
2026-10-14	86	30–154	28.8 µg/m³	14h	54

Back to Katano Air Quality