What is the air quality trend in Ōuda-yamaguchi?

Over the past 8 days, Ōuda-yamaguchi had an average AQI of 68 based on station measurements. The worst day was 2026-10-14 with AQI 100.

How is Ōuda-yamaguchi air quality measured?

Air quality in Ōuda-yamaguchi 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 Ōuda-yamaguchi, Japan

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

Historical PM2.5 and AQI trend from monitoring stations near Ōuda-yamaguchi, Japan.

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

165h

PM2.5 Station

165h · 49 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-10-21	48	27–85	13.2 µg/m³	8h	44
2026-10-20	53	29–101	14.5 µg/m³	24h	41
2026-10-19	69	34–113	21.0 µg/m³	24h	40
2026-10-18	37	26–60	8.9 µg/m³	24h	39
2026-10-17	69	30–153	21.4 µg/m³	24h	40
2026-10-16	80	48–160	26.2 µg/m³	24h	36
2026-10-15	95	53–169	34.6 µg/m³	24h	46
2026-10-14	100	34–158	35.5 µg/m³	13h	33

Back to Ōuda-yamaguchi Air Quality