What is the air quality trend in Uji?

Over the past 8 days, Uji had an average AQI of 61 based on station measurements. The worst day was 2026-10-15 with AQI 84.

How is Uji air quality measured?

Air quality in Uji 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 Uji, Japan

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

166h

PM2.5 Station

166h · 62 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-10-21	40	27–71	10.2 µg/m³	9h	65
2026-10-20	51	28–100	14.1 µg/m³	24h	62
2026-10-19	58	36–93	16.3 µg/m³	24h	56
2026-10-18	36	26–60	8.8 µg/m³	24h	62
2026-10-17	65	35–107	19.5 µg/m³	24h	58
2026-10-16	77	45–163	25.1 µg/m³	24h	49
2026-10-15	84	38–161	28.5 µg/m³	24h	60
2026-10-14	78	33–132	25.1 µg/m³	13h	46

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