What is the air quality trend in Iwase?

Over the past 8 days, Iwase had an average AQI of 47 based on station measurements. The worst day was 2026-10-14 with AQI 58.

How is Iwase air quality measured?

Air quality in Iwase 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 Iwase, Japan

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

165h

PM2.5 Station

165h · 26 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-10-21	38	28–72	9.6 µg/m³	10h	30
2026-10-20	41	30–71	10.0 µg/m³	24h	26
2026-10-19	46	28–78	11.7 µg/m³	24h	26
2026-10-18	35	24–64	8.5 µg/m³	24h	28
2026-10-17	45	29–91	11.3 µg/m³	24h	25
2026-10-16	58	36–90	16.0 µg/m³	24h	24
2026-10-15	55	33–160	15.4 µg/m³	24h	23
2026-10-14	58	30–106	16.7 µg/m³	11h	25

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