What is the air quality trend in Uji?

Over the past 8 days, Uji had an average AQI of 52 based on station measurements. The worst day was 2026-10-15 with AQI 68.

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 · 48 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-10-21	35	30–40	8.5 µg/m³	10h	67
2026-10-20	47	31–89	12.2 µg/m³	24h	62
2026-10-19	51	36–85	13.4 µg/m³	24h	57
2026-10-18	37	28–57	9.0 µg/m³	24h	64
2026-10-17	54	38–83	14.7 µg/m³	24h	58
2026-10-16	67	48–153	19.6 µg/m³	24h	50
2026-10-15	68	34–154	20.7 µg/m³	24h	55
2026-10-14	58	31–87	16.6 µg/m³	12h	48

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