What is the air quality trend in Isa?

Over the past 8 days, Isa had an average AQI of 51 based on station measurements. The worst day was 2026-10-16 with AQI 67.

How is Isa air quality measured?

Air quality in Isa 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 Isa, Japan

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

166h

PM2.5 Station

166h · 13 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-10-21	31	21–45	7.4 µg/m³	10h	11
2026-10-20	46	19–155	12.6 µg/m³	24h	9
2026-10-19	60	23–170	19.0 µg/m³	24h	9
2026-10-18	35	25–55	8.4 µg/m³	24h	10
2026-10-17	55	27–103	15.3 µg/m³	24h	9
2026-10-16	67	40–139	20.0 µg/m³	24h	8
2026-10-15	62	34–173	19.5 µg/m³	24h	9
2026-10-14	56	23–121	16.1 µg/m³	12h	9

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