What is the air quality trend in Hamanoichi?

Over the past 8 days, Hamanoichi had an average AQI of 50 based on station measurements. The worst day was 2026-10-14 with AQI 69.

How is Hamanoichi air quality measured?

Air quality in Hamanoichi 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 Hamanoichi, Japan

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

164h

PM2.5 Station

164h · 10 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-10-21	50	20–173	20.3 µg/m³	7h	8
2026-10-20	37	24–55	8.9 µg/m³	24h	7
2026-10-19	47	23–77	12.1 µg/m³	24h	6
2026-10-18	31	17–50	7.3 µg/m³	24h	7
2026-10-17	53	9–177	16.0 µg/m³	24h	6
2026-10-16	58	32–92	16.4 µg/m³	24h	6
2026-10-15	62	21–166	19.6 µg/m³	24h	6
2026-10-14	69	28–181	24.7 µg/m³	13h	6

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