What is the air quality trend in Yasu?

Over the past 8 days, Yasu had an average AQI of 54 based on station measurements. The worst day was 2026-10-15 with AQI 72.

How is Yasu air quality measured?

Air quality in Yasu 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 Yasu, Japan

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

166h

PM2.5 Station

166h · 29 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	29–72	9.5 µg/m³	10h	40
2026-10-20	46	28–74	11.7 µg/m³	24h	36
2026-10-19	56	32–130	15.1 µg/m³	24h	33
2026-10-18	37	25–56	8.9 µg/m³	24h	38
2026-10-17	59	40–101	16.7 µg/m³	24h	33
2026-10-16	67	42–122	19.6 µg/m³	24h	30
2026-10-15	72	36–154	22.2 µg/m³	24h	34
2026-10-14	63	35–110	18.6 µg/m³	12h	29

Back to Yasu Air Quality