What is the air quality trend in Bunkyo?

Over the past 5 days, Bunkyo had an average AQI of 85 based on station measurements. The worst day was 2026-07-16 with AQI 104.

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
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

32h

PM2.5 Station

32h · 1 station

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-07-21	83	79–87	27.3 µg/m³	28.9	4h	1
2026-07-20	71	71–71	21.6 µg/m³	23.9	1h	1
2026-07-17	85	59–97	28.2 µg/m³	30.3	7h	1
2026-07-16	104	53–136	36.4 µg/m³	44.1	17h	1
2026-07-15	84	69–98	27.8 µg/m³	31.1	3h	1

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