What is the air quality trend in Tomioka?

Over the past 15 days, Tomioka had an average AQI of 31 based on station measurements. The worst day was 2026-05-31 with AQI 40.

How is Tomioka air quality measured?

Air quality in Tomioka 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 Tomioka, Japan

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

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

Current AQI
Good CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

335h

PM2.5 Station

335h · 13 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-06-09	29	21–46	7.0 µg/m³	12h	13
2026-06-08	28	19–48	6.7 µg/m³	24h	14
2026-06-07	27	20–32	6.5 µg/m³	24h	14
2026-06-06	31	19–39	7.3 µg/m³	24h	15
2026-06-05	31	24–42	7.4 µg/m³	24h	14
2026-06-04	29	21–45	7.0 µg/m³	24h	14
2026-06-03	31	13–102	7.9 µg/m³	24h	14
2026-06-02	28	19–38	6.7 µg/m³	24h	14
2026-06-01	34	21–56	8.3 µg/m³	24h	14
2026-05-31	40	28–57	9.6 µg/m³	24h	14
2026-05-30	38	32–47	9.0 µg/m³	24h	15
2026-05-29	34	23–45	8.1 µg/m³	24h	14
2026-05-28	32	24–45	7.7 µg/m³	24h	14
2026-05-27	33	20–53	8.0 µg/m³	24h	15
2026-05-26	34	25–45	8.2 µg/m³	11h	15

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