What is the air quality trend in Hakurōmachi?

Over the past 8 days, Hakurōmachi had an average AQI of 63 based on station measurements. The worst day was 2026-10-14 with AQI 104.

How is Hakurōmachi air quality measured?

Air quality in Hakurōmachi 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 Hakurōmachi, Japan

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

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

Current AQI
Good CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

131h

PM2.5 Station

131h · 1 station

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-10-21	34	3–103	9.9 µg/m³	8h	2
2026-10-20	62	11–154	19.6 µg/m³	18h	2
2026-10-19	70	29–157	21.8 µg/m³	20h	2
2026-10-18	33	16–58	7.9 µg/m³	18h	1
2026-10-17	65	3–162	20.8 µg/m³	20h	2
2026-10-16	60	15–147	17.6 µg/m³	20h	2
2026-10-15	81	21–173	28.3 µg/m³	18h	2
2026-10-14	104	21–247	50.5 µg/m³	9h	2

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