What is the air quality trend in Sanmu?

Over the past 8 days, Sanmu had an average AQI of 44 based on station measurements. The worst day was 2026-08-31 with AQI 59.

How is Sanmu air quality measured?

Air quality in Sanmu 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 Sanmu, Japan

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

165h

PM2.5 Station

165h · 39 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-09-05	28	19–40	6.8 µg/m³	10h	48
2026-09-04	31	17–72	8.0 µg/m³	24h	42
2026-09-03	31	16–86	7.9 µg/m³	24h	36
2026-09-02	51	21–115	15.0 µg/m³	24h	39
2026-09-01	50	28–154	14.0 µg/m³	24h	38
2026-08-31	59	34–121	16.8 µg/m³	24h	32
2026-08-30	55	27–141	15.8 µg/m³	24h	35
2026-08-29	51	24–84	14.4 µg/m³	11h	34

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