What is the air quality trend in Bunkyo?

Over the past 11 days, Bunkyo had an average AQI of 37 based on station measurements. The worst day was 2026-08-01 with AQI 100.

How is Bunkyo air quality measured?

Air quality in Bunkyo 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 Bunkyo, Japan

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

184h

PM2.5 Station

184h · 1 station

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-08-07	8	1–18	1.8 µg/m³	5h	1
2026-08-06	10	1–40	2.5 µg/m³	15h	1
2026-08-05	20	1–39	4.9 µg/m³	18h	1
2026-08-04	26	6–63	6.5 µg/m³	24h	1
2026-08-03	19	5–39	4.5 µg/m³	23h	1
2026-08-02	36	1–103	10.7 µg/m³	17h	1
2026-08-01	100	68–121	34.6 µg/m³	24h	1
2026-07-31	80	54–103	25.6 µg/m³	24h	1
2026-07-30	57	12–82	16.6 µg/m³	24h	1
2026-07-29	20	6–35	4.9 µg/m³	9h	1
2026-07-26	40	40–40	9.6 µg/m³	1h	1

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