What is the air quality trend in Toyoshina?

Over the past 15 days, Toyoshina had an average AQI of 52 based on station measurements. The worst day was 2026-10-16 with AQI 81.

How is Toyoshina air quality measured?

Air quality in Toyoshina 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 Toyoshina, Japan

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

328h

PM2.5 Station

328h · 1 station

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-10-21	36	24–55	8.7 µg/m³	13h	4
2026-10-20	40	21–54	9.6 µg/m³	24h	4
2026-10-19	49	19–130	13.1 µg/m³	23h	4
2026-10-18	33	15–56	7.9 µg/m³	24h	4
2026-10-17	47	22–79	12.2 µg/m³	24h	4
2026-10-16	81	25–500	47.1 µg/m³	23h	3
2026-10-15	71	28–259	26.8 µg/m³	24h	3
2026-10-14	69	23–160	22.2 µg/m³	24h	3
2026-10-13	58	9–113	16.7 µg/m³	24h	3
2026-10-12	58	17–152	17.5 µg/m³	23h	3
2026-10-11	52	4–97	14.2 µg/m³	24h	4
2026-10-10	49	23–106	13.3 µg/m³	22h	3
2026-10-09	67	28–158	21.8 µg/m³	24h	4
2026-10-08	39	15–58	9.4 µg/m³	24h	6
2026-10-07	32	21–42	7.7 µg/m³	8h	5

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