What is the air quality trend in Ōkubo-naka?

Over the past 8 days, Ōkubo-naka had an average AQI of 62 based on station measurements. The worst day was 2026-10-14 with AQI 83.

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
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

165h

PM2.5 Station

165h · 77 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-10-21	40	33–52	9.7 µg/m³	7h	73
2026-10-20	52	32–77	13.5 µg/m³	24h	71
2026-10-19	60	39–80	16.6 µg/m³	24h	67
2026-10-18	41	30–75	10.3 µg/m³	24h	70
2026-10-17	64	36–104	18.7 µg/m³	24h	70
2026-10-16	75	41–152	23.5 µg/m³	24h	58
2026-10-15	82	50–152	26.6 µg/m³	24h	72
2026-10-14	83	30–142	27.1 µg/m³	14h	57

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