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 2026-10-15 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
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

165h

PM2.5 Station

165h · 76 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	32–64	10.7 µg/m³	6h	78
2026-10-20	50	33–71	12.9 µg/m³	24h	72
2026-10-19	60	40–79	16.7 µg/m³	24h	67
2026-10-18	41	28–71	10.3 µg/m³	24h	76
2026-10-17	65	38–116	19.0 µg/m³	24h	70
2026-10-16	77	44–154	24.3 µg/m³	24h	57
2026-10-15	86	52–153	27.9 µg/m³	24h	72
2026-10-14	85	32–153	28.2 µg/m³	15h	58

Back to Katano Air Quality