What is the air quality trend in Tosayamadachō-nakano?

Over the past 8 days, Tosayamadachō-nakano had an average AQI of 45 based on station measurements. The worst day was 2026-10-14 with AQI 64.

How is Tosayamadachō-nakano air quality measured?

Air quality in Tosayamadachō-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 Tosayamadachō-nakano, Japan

Name: Tosayamadachō-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 Tosayamadachō-nakano, Japan.

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

163h

PM2.5 Station

163h · 6 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-10-21	31	11–41	7.4 µg/m³	11h	6
2026-10-20	46	21–133	12.3 µg/m³	24h	5
2026-10-19	41	15–72	10.4 µg/m³	23h	5
2026-10-18	36	15–59	8.7 µg/m³	24h	5
2026-10-17	41	12–67	10.3 µg/m³	24h	5
2026-10-16	53	24–131	14.9 µg/m³	23h	4
2026-10-15	51	15–126	14.8 µg/m³	23h	5
2026-10-14	64	7–157	21.7 µg/m³	11h	5

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