What is the air quality trend in Ibaraki?

Over the past 15 days, Ibaraki had an average AQI of 37 based on station measurements. The worst day was 2026-05-31 with AQI 57.

How is Ibaraki air quality measured?

Air quality in Ibaraki 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 Ibaraki, Japan

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

336h

PM2.5 Station

336h · 38 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-06-09	29	27–34	7.0 µg/m³	4h	64
2026-06-08	30	21–39	7.1 µg/m³	24h	78
2026-06-07	29	22–36	7.1 µg/m³	24h	84
2026-06-06	36	25–43	8.5 µg/m³	24h	83
2026-06-05	32	25–44	7.7 µg/m³	24h	82
2026-06-04	33	23–49	7.9 µg/m³	24h	76
2026-06-03	31	22–43	7.5 µg/m³	24h	79
2026-06-02	32	20–51	7.7 µg/m³	24h	78
2026-06-01	54	34–69	14.3 µg/m³	24h	74
2026-05-31	57	51–69	14.9 µg/m³	24h	70
2026-05-30	51	42–83	12.7 µg/m³	24h	75
2026-05-29	46	37–67	11.1 µg/m³	24h	81
2026-05-28	39	26–53	9.4 µg/m³	24h	80
2026-05-27	33	22–52	7.9 µg/m³	24h	80
2026-05-26	35	24–43	8.4 µg/m³	20h	79

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