What is the air quality trend in Hamanoichi?

Over the past 20 days, Hamanoichi had an average AQI of 38 based on station measurements. The worst day was 2026-05-18 with AQI 54.

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
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

472h

PM2.5 Station

472h · 11 stations

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-29	37	21–62	8.9 µg/m³	23h	7
2026-05-28	29	16–54	7.1 µg/m³	24h	9
2026-05-27	25	14–36	5.9 µg/m³	24h	9
2026-05-26	29	13–52	6.9 µg/m³	24h	8
2026-05-25	34	14–47	8.2 µg/m³	24h	8
2026-05-24	30	21–48	7.1 µg/m³	24h	8
2026-05-23	30	17–52	7.1 µg/m³	24h	10
2026-05-22	25	8–40	6.0 µg/m³	24h	9
2026-05-21	30	18–51	7.1 µg/m³	24h	6
2026-05-20	34	23–42	8.1 µg/m³	24h	9
2026-05-19	40	25–56	9.7 µg/m³	24h	9
2026-05-18	54	43–62	13.8 µg/m³	24h	8
2026-05-17	45	13–55	11.0 µg/m³	23h	8
2026-05-16	53	30–68	13.7 µg/m³	21h	7
2026-05-15	53	30–67	13.8 µg/m³	24h	7
2026-05-14	51	37–62	12.5 µg/m³	24h	8
2026-05-13	41	34–66	10.2 µg/m³	23h	7
2026-05-12	35	24–47	8.3 µg/m³	24h	8
2026-05-11	48	27–153	13.3 µg/m³	22h	7
2026-05-10	40	20–101	10.3 µg/m³	24h	8

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