What is the air quality trend in Tōkamachi?

Over the past 15 days, Tōkamachi had an average AQI of 41 based on station measurements. The worst day was 2026-07-21 with AQI 68.

How is Tōkamachi air quality measured?

Air quality in Tōkamachi 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 Tōkamachi, Japan

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

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

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

274h

PM2.5 Station

274h · 1 station

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-22	57	17–77	16.4 µg/m³	6h	2
2026-07-21	68	24–193	25.0 µg/m³	14h	1
2026-07-20	55	21–125	15.5 µg/m³	20h	1
2026-07-19	45	13–99	12.1 µg/m³	18h	1
2026-07-18	25	9–53	6.0 µg/m³	18h	1
2026-07-17	43	13–61	10.9 µg/m³	15h	1
2026-07-16	48	25–78	12.2 µg/m³	19h	1
2026-07-15	43	25–59	10.6 µg/m³	22h	1
2026-07-14	42	9–68	10.7 µg/m³	22h	1
2026-07-13	42	13–72	10.6 µg/m³	23h	1
2026-07-12	33	13–59	8.1 µg/m³	21h	1
2026-07-11	35	9–68	8.5 µg/m³	23h	1
2026-07-10	29	8–54	7.0 µg/m³	20h	1
2026-07-09	28	6–53	6.8 µg/m³	20h	1
2026-07-08	30	9–50	7.2 µg/m³	13h	1

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