What is the air quality trend in Umeki?

Over the past 15 days, Umeki had an average AQI of 37 based on station measurements. The worst day was 2026-05-16 with AQI 55.

How is Umeki air quality measured?

Air quality in Umeki 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 Umeki, Japan

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

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

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

329h

PM2.5 Station

329h · 4 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-29	42	21–55	10.2 µg/m³	20h	8
2026-05-28	29	16–53	6.9 µg/m³	24h	8
2026-05-27	27	13–45	6.5 µg/m³	24h	9
2026-05-26	30	17–48	7.2 µg/m³	24h	9
2026-05-25	35	19–53	8.3 µg/m³	24h	9
2026-05-24	32	22–48	7.6 µg/m³	24h	9
2026-05-23	33	23–61	8.1 µg/m³	24h	10
2026-05-22	25	14–35	6.0 µg/m³	24h	10
2026-05-21	29	16–42	7.0 µg/m³	24h	7
2026-05-20	33	21–51	8.0 µg/m³	24h	10
2026-05-19	40	27–57	9.8 µg/m³	24h	9
2026-05-18	49	18–61	12.4 µg/m³	24h	8
2026-05-17	47	32–60	11.5 µg/m³	22h	10
2026-05-16	55	45–62	14.0 µg/m³	21h	8
2026-05-15	52	49–54	12.6 µg/m³	2h	12

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