What is the air quality trend in Kasumigaura?

Over the past 8 days, Kasumigaura had an average AQI of 39 based on station measurements. The worst day was 2026-08-31 with AQI 51.

How is Kasumigaura air quality measured?

Air quality in Kasumigaura 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 Kasumigaura, Japan

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

165h

PM2.5 Station

165h · 36 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-09-05	27	20–35	6.5 µg/m³	7.3	10h	48
2026-09-04	29	17–61	7.2 µg/m³	7.2	24h	43
2026-09-03	28	16–84	7.0 µg/m³	9.3	24h	38
2026-09-02	46	23–129	12.7 µg/m³	12.7	24h	40
2026-09-01	44	27–143	11.6 µg/m³	11.3	24h	39
2026-08-31	51	31–126	14.1 µg/m³	6.1	24h	33
2026-08-30	48	20–119	13.3 µg/m³	8.4	24h	36
2026-08-29	40	27–65	9.9 µg/m³	3.4	11h	36

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