What is the air quality trend in Ōkubo-naka?

Over the past 8 days, Ōkubo-naka had an average AQI of 47 based on station measurements. The worst day was 2026-08-01 with AQI 56.

How is Ōkubo-naka air quality measured?

Air quality in Ōkubo-naka 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 Ōkubo-naka, Japan

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

Historical PM2.5 and AQI trend from monitoring stations near Ōkubo-naka, Japan.

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

165h

PM2.5 Station

165h · 67 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-08-08	36	30–44	8.8 µg/m³	4h	60
2026-08-07	36	6–52	8.7 µg/m³	23h	58
2026-08-06	54	40–68	13.8 µg/m³	24h	50
2026-08-05	53	30–104	13.7 µg/m³	24h	36
2026-08-04	46	33–59	11.3 µg/m³	24h	45
2026-08-03	46	31–63	11.3 µg/m³	24h	48
2026-08-02	50	32–78	12.4 µg/m³	24h	57
2026-08-01	56	49–63	14.2 µg/m³	18h	54

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