What is the air quality trend in Nakano?

Over the past 8 days, Nakano had an average AQI of 40 based on station measurements. The worst day was with AQI .

How is Nakano air quality measured?

Air quality in Nakano 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 Nakano, Japan

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

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

Current AQI
Good

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Trend

140h

PM2.5 Trend

140h · 1 station

Daily Summary

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-04-15	35	4–47	8.5 µg/m³	12.6	8h	18
2026-04-14	53	44–62	13.4 µg/m³	21.3	24h	20
2026-04-13	49	30–57	12.0 µg/m³	19.8	17h	17
2026-04-12	44	35–52	10.6 µg/m³	16.4	24h	19
2026-04-11	46	28–59	11.4 µg/m³	17.2	24h	20
2026-04-10	37	18–57	8.9 µg/m³	16.7	24h	18
2026-04-09	29	13–40	7.1 µg/m³	13.4	18h	17
2026-04-08	27	27–27	6.4 µg/m³	6.8	1h	1

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